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cloud vs vps hosting

5 key Differences between Cloud Hosting & VPS Hosting

The environment of a VPS is exactly same as the Cloud.  You get a VPS and configure it as per your requirement.  Similarly, a Cloud hosting is a virtual dedicated server which can be configured the way client wants. But the major difference is in the scalability option & the platform of the cloud. Let’s understand how cloud is different than a Virtual Private server or VPS .

cloud vs vps hosting

First thing to understand, A Cloud server can be called as a VPS server but a VPS is not a cloud server. 

Confused? Below are some solid points where Cloud and VPS hosting have a major difference. Let's investigate it further.

1. Infrastructure

In a VPS hosting, one dedicated server (suppose a dedicated server with 64 GB RAM and resources) is partitioned into multiple servers. All these partitions are virtualized further and each of them work as a dedicated server, hence called Virtual dedicated server or VDS or VPS.

But in a Cloud hosting, we rent a small portion of a Big network of machines connected together. (Talking about public cloud) A giant setup of machines that offer resources are connected together and then they are further rented to clients.  You can always scale up your resources as per your requirements and it will be done in a few minutes of clicks.

2. Availability

In a VPS server, if a machine or part of the machine fails, your VPS will go down causing downtime till the problem is fixed but in case of Cloud server, as soon as any of the machine part get broken, the system is routed to another available physical resource causing minimum downtime.

3. Payment Model

Depending upon the virtualization method used, A VPS can offer you only one operating System. But in a cloud, you get the freedom to choose any operating system you want. You can install or replace any operating system from a range of OS available.

In a Cloud, things are pretty fast. Every server slot is available and is always ready to be served in seconds. But in a VPS, it takes time to virtualized a dedicated server and then allot VPS slices to the client. That is the reason Cloud uses optimum resources as anyone can occupy any slice by making its payment. But in a VPS, you are not sure when all slots will be sold. Your resources might not be utilized well if you are hosting only one client on a parent server.

4. Resource distribution

In a Cloud environment, you are totally separated from others. You will be getting dedicated resources of what you have been told. But In a VPS, you get a virtual environment with portioned disk space & certain bandwidth, however the CPU & the memory of the parent machine is equally distributed among all VPS slices. VPS companies offer you a minimum allocation of resources that is guaranteed 24/

For example, just because a VPS package claims to offer 1 GHz of CPU performance and 512 MB of memory, does not necessarily mean that either the memory or CPU allocation is not split into multiple slices.

Also, In a cloud, a client is completely isolated from the files of other client, it is more secure than VPS hosting.

5. Choice of Operating system

In a VPS hosting, you can only get a certain number of Operating system to chose from, depending upon the Virtualization method used on the parent server. However,, a Cloud hosting is an example of IaaS where you have the freedom to chose any Operative system template.

Cloud Hosting vs VPS Hosting

The following tabular comparison between Cloud hosting and VPS hosting will present a more clear picture of these two hosting models

 

Features

 Cloud Hosting

 VPS Hosting

Scalable

Yes

No

Payment Model

Pay as you use

Monthly or Yearly

Resource Upgrade

Instant

Takes time (Limited)

Choice of Infrastructure

Available

Not possible

CPU & RAM

Completely isolated

Shared among all slices

Overall Cost

Cheaper on Public Cloud but costly on Private cloud

Relatively cheaper than private cloud

Choice of Operating System

Can chose any OS

Only one OS depending upon the parent server VM

Examples

Amazon AWS, Digital Ocean

Bigrock VPS, Hostgator VPS

 

Which is better?

There are multiple parameters to consider while chosing the best. If you are chosing a Private Cloud then VPS will be cheaper for you. But in this case, you will get limited features of VPS and security risk as private cloud is way more secure.

Also If you chose to host your files on Public Cloud (DigitalOcean,Linode etc), it is relatively cheaper but less secure than Private cloud.. But as compared to the VPS, Pubic Cloud hosting has the edge and that is why it is getting popular everyday.

In a Cloud hosting, you get relatively cheaper price, secure environment and freedom of resource scaling. What else do you need.

 

Recent search terms:

  • free trial web host ispconfig cart php
 

Need a Free VPS for educational purpose, try these hosting solutions

If you are a student or a researcher and you require a Virtual Private server to host your script for educational purpose, there are many good companies offering you free VPS hosting. Some require credit card information, some ask you to verify yourself as a student but the good thing is, you get a free VPS to do your work. However there are some special programs running at major companies for students and educators. All you need is to prove yourself as one.

1. GitHub Student Developer Pack

A wonderful facility from a wonderful community. GitHub student pack offers you free promo codes that you can apply to avail great discounts for hosting. They have partnered Digitalocean, Microsoft Azure cloud, Amazon AWS educate program. Once you get the promo, you can get the VPS for absolutely free for a few months. 

  • You get $100 DigitalOcean Credit for Cloud hosting

Keep in mind that you will have to provide them your school issued email ID and school must be a recognized school.

2. Amazon AWS Educate Program

Amazon educate program is for both educators and students. Here you get discount coupons along with access to multiple helpful features of amazon lab.

For Educators

  • 200 in AWS credits per educator – at member institutions
  • $75 in AWS credits per educator – at non-member institutions

For Students

  • $100 in AWS credits per student – at member institutions
  • $35 in AWS credits per student – at non-member institutions

3. Microsoft Azure for Education

They offer $200 free credit to use while running linux or windows virtual machines on cloud for educational purpose.

Student and faculty both get free credit by applying through a simple application form on the website. Needless to say, you need to verify yourself as an educator or student.

There are many other web hosting companies with certain offers for Students for free hosting but these were the top 3. If you are not an student but still want hosting, you can try these companies who offer Free VPS hosting without asking your credit card information. 

Recent search terms:

  • free vps for students
  • free vps for education
  • vps free for students
 
best cloud hosting company

How to decide the best Cloud Hosting Provider

 When things are changing fast, you don't want to be one lagging behind. Cloud Computing is the future and almost every company is moving its business on the cloud. 

When it comes to hosting files, apps, websites or data on cloud, you need to make a wise deicion of chosing an affordable cloud host that satisfies all your needs. If you are a startup or a small-medium company, you focus more on cost cutting but at the same time data security is important too. There are some parameters you should keep in mind while deicing the best cloud host for your business.

Before you chose a VPS Cloud Hosting Company

best cloud hosting company

Below are some important points that you should consider before deciding a cloud hosting company for your business. Addtionally some quick notes have also been written to help you find the best cloud host.

1. Data security

First thing first. Your data is important and you must look for the provisions they have for the security of your data.

  • Do they offer free or paid backup service.
  • What will happen in case of a crash.
  • What if they lose your data.
  • How secure is your data center from natural clamities and man made hacks.
  • How secure is your credit card information with them

These are some genuine questions you may ask to sales chat before your next step. Addtiionally you may ask them if they have any certifications to satisfy your quest. (such as PCI complaince for payments)

2. Technical support & server management

If you are going to host a website on cloud, you need to be very concerned about the tech support.

I remember a case where a friend of mine had hosted his wordpress blog on a cPanel powered cloud. Just a minor glitch with apache config file became a nightmare as the host surrendered to provide any support on cPanel. They will ready to assist if he could explain the exact problem but the vendor had no idea of wordpress or cPanel so they refused and he ended up changing his host. (Always ask the provider about how deep they will support you, ask if you will get managed or unmanaged cloud)

Also try to ask what methods of support they provide. Email or Chat or ticketing support. Also the working hours, if they work 24*7 or if they keep weekends off. Believe me, this is very crucial when you get stuck and need an emergency help.

3. Datacenter & Server locations

Always ask the location of the datacenter. Multiple location gives you the freedom to chose the nearest server that gives you additional benefits of data processing speed.

Also ask your vendor about the security of data center against natural disasters and facilities to protect the DC from digital theieves.

Another important question about the server location is the complaince of the local government. Ask if the local government has no issues with the content you are going to host. (Suppose you are running a gambling website and the local govt policies are against it, it can create big trouble for you). The best answer to this concern is SSAE 16 certification which assures the security of your data

4. Pricing model

Cloud has an addtional benefit of pay as you use model. You pay for what you actually use. Traditional hosting comes up with agreement or SLA where you have to pay annually or monthly but cloud has an edge where you can pay hourly.

Always ask your cloud hosting provider if they offer such model. hourly billing is beneficial when you want to use the cloud for a few days. You just pay the bill accordingly instead of the whole monthly payment.

5. Reviews & reputation

The best way to recognize a company is by its reputation. You can search ther reviews of the company at various online forums. (make sure the reviews are not older than 1 year).

Focus more on negative review and try to understand the seriousness of the review. Analyze how serious is the most negative review about the vendor.

Also Check- Top 5 Cloud Hosting companies for WordPress

Addtional Notes to consider

  • Always prefer a company which offers trail of its product. start the trail and first of all check their support and observe how they respond. Take your final decision accordingly.
  • Ask for a dedicated IP and always perform a blacklist check to see if your IP has not been blacklisted (check here)
  • Pay atleast 5 minutes reading the data center where you are going to be hosted. It should be secure and atleast Tear 3+.
  • Always ask the renewal price, web hosts often catch customers by introducing low first month prices that goes straight up next month.
  • Pre-purchase verification of credit card or your name verification might seems time consuming but take them in positive way. If a company is doing that, they are serious about business.
  • If the host is asking further about the kind of your business and the files you are going to host on the server, it is a positive sign. Coordinate them well.
  • Check their client database, to whom they have served and who recommends them. A company is recognized by their client base
  • Never ever ever purchase any service from resellers. There are many companies in market who only resel products of a certain cloud company. They are immature, inexperienced and greedy. Most of the time, you end up wasting your money & data. 
 
wordpress-cloud-hosting

Best Cloud Hosting Companies for WordPress

Cloud has become the most astonishing term in web hosting. Cost effectiveness and ease of operations has made cloud the first choice for hosting websites. We already have written a guide expaining the deciding factors for a Cloud hosting.

wordpress-cloud-hosting

Web hosting industry is witnessing a major jump in cloud industry. PaaS & IaaS companies are investing heavily into cloud computing for small & medium business.

As you already know Why Cloud is better than traditional hosting. Choosing the best cloud hosting company for your WordPress blog becomes crucial.

Top 5 Cloud Hosting for WordPress

Talking about WordPress which is a php-mysql based cms, here we have listed best cloud hosting companies for WordPress. Considering price, support, value for money as factors, here are the top 5 cloud hosting solutions for your wordpress blog.

1. Bluehost Cloud Hosting

Recently launched Bluehost cloud hosting plans starts from $5.99 only(promotional price, renewals @ $9.99) that offers 2GB RAM & 2 CPU cores. Undoubtedly they're way more cheap. Great thing is, all plans are full managed and you get free cPanel for file management.

bluehost cloud hosting pricing

Pros:

  • Cheapest among all
  • Integrated caching for better performance of wordpress,
  • Varnish caching
  • Global CDN
  • Free cPanel file management
  • Completely managed servers

    Cons:

  • Inexperienced in Cloud
  • Monthly billing instead of hourly
  • You can't chose server location

2. DigitalOcean SSD Cloud Hosting

Digitalocean is the leader of Cloud hosting and the quality of their product is beyond awesome. If you are a technical person with knowledge of the subject, you will fall in love with them. Their support documentation & extremely qualified community doubles the fun. But at the same time, things will be awful if your area of expertise is not same.

I strongly advise you to avoid digital ocean if you don't know anything about web hosting.

digitalocean cloud price

Pros:

  • Pay as you go model
  • $10 free credit
  • Hourly billing
  • Extremely cheap
  • Fast SSD servers
  • Benefit of geo-location

    Cons: 

  • Requires technical knowledge,
  • You won't get support on WordPress issues.
  • You handle the website migration process

3. Linode Cloud Hosting

Linode is much similar to Digital Ocean but more experienced. Although they are costlier than DigitalOcean but the features & business model are almost same.

linode cloud pricing

Pros:

  • Hourly billing model
  • SSD powered
  • Choice of server location
  • Reliable uptime history
  • 7 days free trail

Cons:

  • Relatively costly
  • Requires technical knowledge as they provide unmanaged servers
  • NO support on website transfer

 

4. VPS.net Cloud WordPress Hosting

They have customized plans for WordPress hosting on cloud. Personally I have used VPS.net services and loved its performance. The WordPress cloud droplets are bit costly ($5 more) but they claim to have been pre-customized with services like w3t cache.

vpsnet wordpress cloud pricing

Pros:

  • Multiple server locations
  • Customized for wordpress
  • Option to add more storage

Cons:

  • Extremely costly ($30 for 1GB RAM)
  • Price changes according to server location
  • HDD drives

5. Site5 Cloud Hosting

Site5 offers another reliable cloud hosting solution with plans starting from $25. But there's one thing to note, they do not provide assured RAM on their cloud plans. They just use a server of 64GB RAM with 8 Cores shared equally among the users which is not a very good idea.

Another thing is the disk, they are still using HDD however, during a conversation, their representative informed me that they are replacing their HDD's with SSD.

site5 cloud pricing

Pros:

  • Fast & reliable network
  • free 30 days trail
  • professional team,
  • Instant support,
  • Free Dedicated IP
  • 45 days moneyback guarantee

cons:

  • No SSD,
  • Shared RAM,
  • Bit costly.
  • Server locations (Only in US)

Additional note: Both Bluehost & Digitalocean deserve to be on the top and it was a tough call for me to decide who is the best. But bluehost with its inbuilt cPanel feature (generally costs $10) & wordpress support (as DO doesn't provide support on wordpress, they only deal with LAMP stack) won the ranking.

Ranking parameters

As WordPress is used to host blogs and websites. It is used by small or medium organisation hence cost plays an important role. Apart of that technical support & product quality are obvious questions one would ask before buying. I have taken the following important parameters with their weight-age to rank the best wordpress cloud hosting for you.

  • 40% value to the product cost (that is why there is no mention of companies like Amazon AWS, Rackspace etc).
  • 20% to support
  • 20% to the product quality &
  • Rest 20% on value for money.
 
Private-v-Public-Cloud-Comparison

What is Private Cloud

As per the definition of US National Institutes of Standards and Technology’s (NIST)- a private cloud model is a deployment model of cloud computing in which the cloud is dedicated to a certain organisation or company. Unlike public cloud, it is not shared among random users.

What is Private Cloud Hosting?

In a private cloud hosting or enterprise cloud hosting your web server is kept behind the firewall. All the resources are dedicated to your company or enterprise. A private cloud hosting could be utilized by a financial company (such as banks) to store its highly sensitive data. Private clouds are more customizable. Added security, leased lines, dedicated bandwidth, backup power resources are the additional benefits a private cloud hosting can give you but of course that does come up with a cost.

Private cloud hosting can be further divided into managed private cloud & Unmanaged private cloud.

In Managed private cloud, your cloud is managed by the vendor. They take care of security & the server management. However in an unmanaged private cloud, the enterprise handles the server and its operations.

Benefits of Private Cloud hosting

Privacy & Security: Needless to say private clouds are more secured as the data is separated and is behind the firewall. Your data is completely isolated and is in your control.

Additional control: If budget is not a problem, you have the control to power up the security or boost up the performance of the node. You can configure the cloud as per your requirements. Be it dedicated bandwidth, additional power backup solutions or custom configuration or software or hardware, you’re the man in charge here.

Difference between Public Cloud & Private Cloud

The main difference between Private & public cloud is that the hardware & software configuration of a public cloud is build to satisfy the requirements of multiple organisations whereas the private cloud is solely dedicated to one organisation and its infrastructure can be developed entirely dedicated to that only organisation giving more power to the end user.Private-v-Public-Cloud-Comparison

As Public cloud is open for everyone, it is less secure than private cloud as in private cloud, you data is isolated from others and you are only responsible for that. In case you are carrying a sensitive data, Private cloud should be your choice.

Another point to note here in security, In a public cloud, you don’t need to worry about the security of the data as it is the responsibility of the vendor however in a private cloud, you manage the data and hence you are responsible for its security (unless you opt for managed private cloud in which the vendor manages the data). 

Public or private? Which cloud is right for you?

Small or medium companies often chose public cloud as it is relatively cheaper. However large enterprises or the companies with sensitive data chose private cloud as it gives you more control on the data.

 
cloud models and public cloud

What is Public Cloud

According to US National Institutes of Standards and Technology's (NIST), A public cloud is one of the four deployment models of cloud computing in which a public cloud provider offers resources such as bandwidth, storage, hardware etc available to the general public over the internet. Anyone can use the public cloud by paying the service charge. It may be free or on a pay-per-month model.

Definition of public computing: The public cloud can be defined as a multi-user environment, where you access & operate in a cloud computing environment that is shared with a number of other clients or tenants.

cloud models and public cloud

What is Public cloud hosting?

There is a minor difference between public cloud computing and pubic cloud hosting. The term computing has a wide subset which includes hosting, software, apps & services however the term cloud hosting relates cloud in a specific niche viz. web hosting (hosting files/scripts on cloud). 

Read:Top 5 Cloud companies to host wordpress

Public cloud hosting relates to a hosting solution to public where a cloud host allows users to use its resources without any restriction.

Leading Public Cloud companies in 2016

1. DigitalOcean- A cloud based web hosting company that provides cloud droplets to public on hourly basis (pay as you go model). Users can host their scripts, manage their server on their own and pay according to their usage. Digitalocean is the fastest growing cloud based web hosting company.

Also: Tips to decide the best Cloud Hosting Company

2. Linode- Another popular cloud based web hosting company that falls under PaaS category and provides hosting to public (thus a public cloud provider) on a monthly basis.

3. Rackspace: Although rackspace offers both public & private cloud services, but they are one of the most popular name of cloud industry. They offer secure & enterprise class public cloud infrastructure to their clients.

4. Amazon EC2- Similar to rackspace, amazon ec2 is a public cloud where any random person can host its script by paying the charges.

5. Google App engine– Public Cloud company expanding furiously.

6. Microsoft Azure- Microsoft's cloud platform which is a perfect example of public cloud service vendor.

 
difference in iaas paas & saas

Explain me like I’m five- IaaS, PaaS & SaaS Simplified

One fine day I was sitting with my younger brother writing article on Cloud computing & its models.

Out of a sudden the kid asked me “what is this IaaS, PaaS, SaaS all about?

Three different models of Cloud Computing, I replied.

What is Cloud then?  He asked curiously.

I answered, “Instead of using your own hardware and software for compute as a utility, you could access shared pool of resources(compute, storage, network) per your requirement over the internet in a seamless way.”

Advantages & disadvantages of Cloud computing

But at the same time, I realized I was trying to deliver a complicated explanation to such a non-tech kid. my mind began to come up with a simple explanation that could relate him to daily life. Below is the simplified explanation I could come up with.

Few decades ago, when farmers used to grow wheat and store them in their premises. They used to store it and later they had to take the wheat to the flour meal to get flour out of wheat so that one could get rotis (breads). Relate this as the traditional hosting model. You create your own infrastructure, platform in a small premises and then use it for computing purpose. You have to manage each step yourself. More (Difference b/w Traditional hosting vs Cloud hosting)

Things developed and we adopted cloud model with three basic models. IaaS, PaaS & SaaS.

difference in iaas paas & saas
Credit: Internet

Now imagine you, instead of growing grains yourself, started buying flour packets of certain brand and size. Now you don’t need to care about the farming process. You can chose the quality of flour and size by paying accordingly to the vendor (who has the headache to generate the wheat and get it floured by flour mill).  Relate this as Infrastructure as a service or IaaS. Vendors are Mircosoft, Amazon, Openstack, Rackspace etc. Read More at IaaS-Infrastructure as a service

Now there is another option for you is to buy ready made rotis/breads. It is more convenient for you to buy it and simple heat it. Now you lost control over the flour quality and you don’t have to worry about that anymore. You just pick the best brand that makes the best bread. You buy breads your need and pay it accordingly. Related this as platform as a service or PaaS where you have to select a PaaS vendor that suits your requirement and host your applications or scripts. Some of them are Google App hosting, Microsoft Azure or Heroku. Read more about PaaS or Platform as a service

But there is another option available for you every time.You can visit a good restaurant, order breads and eat it anytime without worrying about the quality of flour or the brand of the bread. You just eat the bread and pay the money. SaaS or software as a service is somewhat a similar model where you don’t do anything related to the technical work. You go to a vendor that has already built software and hosted on some platform, you pay the money(monthly/yearly) and use the software. Read more about SaaS or Software as a service

You only have to chose the service, like you want Paneer or rice or bread as a service. It’s the vendor’s job to find suitable ingredients and cook the service for you.  Suppose you want database a a service, the vendor chooses an infrastructure and platform to host the database with appropriate environment. You only pay the charges and use the service. Some popular SaaS examples are Microsoft 365, Google Docs, WHMCS billing app,  Gmail etc.

Difference between cloud hosting & traditional hosting

 And that’s how I explained IaaS, PaaS & SaaS to the kid. I hope it was clear enough for you too. In case I’m wrong, feel free to write which part you didn’t understand. I will be more than happy if you could write a better explanation on the same topic.

 
cloud vs traditional web hosting

What is Cloud hosting? Difference between Cloud & traditional hosting

Nowadays Cloud hosting or simply cloud is the most confusing term among normal web users. Actually, it is not that complex. Cloud hosting is the advance form of normal web hosting. It is reliable, advanced, flexible and salable as compared to traditional one because of its model (Read Cloud Computing explained).

What is Cloud Hosting?

In a Cloud hosting, we fetch required resources from a large network of computers. All kind of services, softwares, hardwares & resources are networked altogether at one place. Users can use cloud as infrastructure as a service (IaaS) or platform as a service (PaaS) according to their needs. (You should read: What is IaaS, PaaS & SaaS & Difference among them) To understand it further, lets find what makes cloud hosting different from traditional web hosting models.

You Should know: IaaS, PaaS & SaaS are three models of Cloud Computing.

Difference between Cloud hosting & traditional hosting

cloud vs traditional web hosting

The term web hosting means providing Internet space & resources to host a website. When we are talking about rent web hosting, we are talking about web space, bandwidth, dedicated IPs & other requires server resources.

Now the model of web hosting has been changing from time to time. Be it shared hosting, VPS Hosting, Grid Hosting, Dedicated hosting & now the Cloud Hosting.

When we are talking about normal web hosting or the traditional web hosting, we mean shared or VPS or dedicated web hosting. Let's understand the difference between these & the cloud hosting.

Also read Best Cloud Hosting for WordPress

Shared Hosting/reseller Vs Cloud Hosting- In a Shared hosting, a certain server with some fix configuration is shared among a number of users. You share disk space, CPU, RAM & other resources among the other users hosted on the same server. Also the configuration (such as Operating system, RAM, CPU cloak speed etc) remains unchanged.

However a Cloud hosting is like a virtual private server in which you have the independence to chose RAM size, OS, virtualization flavor. You do not share any kind of resourced with anyone.

Virtual Private hosting vs cloud hosting: VPS hosting is much similar to cloud hosting where client gets a virtualized private server with certain resources which won't be shared with anyone else. But the difference here is the efficiency. (Read about:  Free Linux VPS hosting )

Since client is allocated a guaranteed amount of resources that can never be rerouted to other clients. This means that one client could have multiple free resources, while another is overloaded. (Some companies do offer the upgrade of your VPS resources but it takes alot more time as compared to cloud where it gets done in a few clicks) Check- Selec

Difference between Cloud server & dedicated server:  In both cases you get dedicated resources but the speed of operation is the difference. In cloud, you can upgrade yourself to a higher droplet (higher configuration) with some clicks.

However, in a dedicated server if you wish to upgrade your resourced, you need to contact your server provider, then they will take the backup, shut the server down and increase the resource (hard disk, RAM or whatever). The whole process takes hours or days in some cases.

Must read: Tip to decide the best cloud host

A cloud server is always available for you but if you just have purchased a dedicated server with certain configuration, they will take at least 2 hours to set it up and make it online.  More here

 
iaas paas saas

IaaS PaaS & SaaS explained with examples & Comparison

IaaS PaaS & SaaS  are three Cloud computing models popular in the market. Depending upon the requirement a user can opt for any of the three models. Here we have explained IaaS, PaaS & SaaS model in the best possible way so that even a beginner can understand and differential among them.

iaas paas saas
Credit- Internet

What is IaaS? (Infra as a service)

IaaS provides the infrastructure such as virtual machines and other resources like virtual-machine disk image library, block and file-based storage, firewalls, load balancers, IP addresses, virtual local area networks etc. Infrastructure as service or IaaS is the basic layer in cloud computing model.

IaaS, PaaS & SaaS-Explained like you’re five

More elaborately IaaS is analogous to buying furniture from Walmart. You are given all the materials, you need to build it yourself. ie, you are given a computer without even an OS on it, and you can install the OS and all the software on top of it as you wish.

Common examples: DigitalOcean, Linode, Rackspace, Amazon Web Services (AWS), Cisco Metapod, Microsoft Azure, Google Compute Engine (GCE) are some popular examples of Iaas.

What is PaaS (Platform as a service)

 PaaS or platform as a service model provides you computing platforms which typically includes operating system, programming language execution environment, database, web server. technically It is a layer on top of IaaS as the second thing you demand after Infrastructure is platform.

More elaborately, This is like ordering in a fast food joint like chipotle. You have your choice of toppings, but there only a few bases for the toppings – a bowl, or burrito, or taco, etc.ie, The computers that you get in an PaaS offering, have a fixed OS and software stack. You can run your software on top of this. Example, you can deploy any code on top of the Google app engine.

Common examples: AWS Elastic Beanstalk, Windows Azure, Heroku, Force.com, Google App Engine, Apache Stratos.

IaaS PaaS & SaaS simplified explanation

What is SaaS (Software as a service)

In a SaaS you are provided access to application services installed at a server. You don’t have to worry about installation, maintenance or coding of that software. You can access and operate the software with just your browser. You don’t have to download or install any kind of setup or OS, the software is just available for you to access and operate. The software maintenance or setup or help will be provided by SaaS provider company and you will only have to pay for your usage.

More elaborately – This is like borrowing a reference book from a library. You go, read the book, return it and come back. ie, you use the software available online, and that’s it.

Common examples: Google Apps, Microsoft office365, Google docs, Gmail, WHMCS billing software

Also read: Explain IaaS, PaaS & SaaS to a non-tech person

IaaS, PaaS & SaaS with car example

With IaaS, it’s like leasing a car. Keeping the car repaired is someone else’s problem, you just need to supply it with fuel (setting it up, maintaining software, etc.) and you get to go pretty much wherever you want to.

PaaS is a bit like getting a cab. You get in and choose where you want to go to and how to get there. Keeping the car running and figuring out the details is up to the driver.

SaaS is a bit like public transport. Cheap, someone else takes care of pretty much everything, you just get to use it. This comes at the price of not always getting as close as you want (less customizability)

Difference between IaaS PaaS & SaaS

In the following tabular format we will be explaining the clear difference between IaaS PaaS & SaaS

difference in iaas paas saas
Credit: Internet

Basic difference between IaaS, PaaS & SaaS

Features Iaas PaaS SaaS
What you get You get the infrastructure & pay accordingly .Freedom to use or install any OS, software or composition Here you get what you demand. Software, hardware, OS, web environment.  You get the platform to use & pay accordingly  Here you don’t have to worry about anything. A pre-installed, pre-configured package as per your requirement is given and you only need to pay accordingly.
Importance The basic layer of Computing Top of IaaS It is like a Complete package of services
Technical Difficulties Technical knowledge required You get the Basic setup but still the knowledge of subject is required. No need to worry about technicalities. The SaaS provider company handles everything.
Deals with Virtual Machines, Storage (Hard Disks), Servers, Network, Load Balancers etc Runtimes (like java runtimes), Databases (like mySql, Oracle), Web Servers (tomcat etc) Applications like email (Gmail, Yahoo mail etc), Social Networking sites (Facebook etc)
Popularity Graph Popular among highly skilled developers, researchers who require custom configuration as per their requirement or field of research. Most popular among developers as they can focus on the development of their apps or scripts. They don’t have to worry about traffic load or server management etc. Most popular among normal consumers or companies which reply on softwares such as email, file sharing, social networking as they don’t have to worry about the technicalities.

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how cloud-computing works

What is Cloud Computing? Advantages & Disadvantages with example

What is Cloud Computing?

In computer science the term cloud relates to a network of computing devices working together to provide services. Cloud Computing means denotes a network of computing devices working altogether to produce result. There are three models of Cloud Computing. IaaS, PaaS & SaaS (Read: IaaS, PaaS & SaaS explained with examples)

Definition: The practice of using a network of remote servers hosted on the Internet to store, manage, and process data, rather than a local server or a personal computer.

how cloud-computing works
Credit: Howstuffworks.com

As an example, In a Cloud Hosting infrastructure (which is an example of cloud computing), all the web hosting services such as ftp, mail, apache, mysql will be kept on separate servers which ensures us that the failure of one device won’t cause a system failure. The system will remain online as the failed device can easily be replaced by a fit one which obviously reduces the time and the cost.

Furthermore, as we are using a network of devices, that gives us the ability to use as much resource as we want without any downtime.

What is not cloud: Keeping files in your hard disk or a having a dedicated network attached storage (NAS) hardware or server in residence or office is not cloud.

Mythbuster: Cloud is not just a backup solution as most of us use it as. The data of most of the apps we use in daily life, store their entire data on cloud.

In Simple terms, with an online connection, cloud computing can be done anywhere, anytime.

Benefits of Cloud Computing

  • Upgrade or downgrade your package as per your requirements. You don’t need to change the whole device here. Resources are available, take as much as you need and pay for the same. No downtime or time lapse.
  • Dedicated resources- In a cloud environment, you are given dedicated resources, the system ensures that only you get the resources. Sharing of CPU or memory doesn’t happen in a Cloud environment.
  • Security benefits of Cloud- As every cloud user gets an isolated environment, this ensures the security problems will be isolated to a user only rather than spreading to others which generally happens in a shared environment. Furthermore the separate devices prevents the chances single point of failure.

If we talk in terms of hosting, a user hosted on Cloud server get all the features of a dedicated server with dedicated resources (whatever the users buys) with no sharing of resources with anyone.

Real life examples of Cloud Computing

I already have given the example of cloud computing in Cloud Hosting environment but here are some real life services based on cloud computing.

Google drive– A popular services which offers users to keep their file on their cloud server. Gone are those days when people use to keep their office files in their computer hard drive. Keeping files on Cloud makes it accessible to everyone you wish.

Apple iCloud– A services which gives user the ability to synchronize their mobile phones so they don’t need to worry about the data while changing phones. The data is stored on iCloud along with the memory of the phone. A user can access it from any location even when he/she is not having their phone/device.

There are many other day to day examples of cloud computing or cloud services which we have adopted such as Chromebook or chrome-bites. These devices have minimal space just to run the chrome OS, they connect (using the chrome browser) to the cloud and perform almost every action of yours on cloud (apps, media, storage etc).

IaaS PaaS & SaaS Comparison

Drawbacks of Cloud Computing

Despite so many advantages, there are some major flaw of cloud computing and the biggest disadvantage is its dependence on Internet.

Every single operation on cloud is based on the internet connection which is the backbone of cloud computing. Your access to data is totally dependent on the access to the internet. Downtime can be a nightmare in a cloud computing environment.

Even a slow connection can be your worst dream as all your data is on cloud and slow internet = slow access to data. This turns into a serious trouble in third world countries where we have failed to avail them an average connection speed. (Imagine the situation when a user has to wait 6 hours to download a file of 1 GB)

However I do not consider the dependability of cloud on Internet connection as a serious problem is solvable.

Bottomline: Is Cloud good or bad?

Cloud computing is undoubtedly the future. Despite its huge dependability on Internet connection, the cloud gives you a better control and accessibility to the data. The leverage on cost and lesser security issues makes cloud a better platform than the traditional one.