What is SaaS (Software as a Services):

SaaS is recognize as the most popular cloud computing model which provides the user with access to cloud-based software. SaaS software is install on a remote cloud network which is easily accessible via APIs and the web. Users can take application support to work on various projects and store their data very quickly. The SaaS provider cares for all tasks such as the operation of the software and reliability of the hardware. Clients have no role to play in the cloud model and will only be able to access the software to complete their work. 

SaaS is a special cloud service model in which users do not need to install or update SaaS applications on their computers and use plug-ins to access anything. The SaaS model services are available on a subscription basis, and your code is ready to go after you have signed in using your username and password. SaaS is considered a highly valued method of cloud delivery since more than 50 percent of organizations already use SaaS services. This allows the user to use all cloud-based services to handle the primary infrastructure without any requirement.

When to choose SaaS?

• • • For projects which have short term goals and require collaboration up to a significant extent.
    • For applications which require mobile as well as web access.
    • It is highly suitable for businesses which have limited IT, staff.
    • SaaS can be beneficial if you are planning to use apps on a provisional basis.
    • If an organization wants to release software within quick time.
    • It is best for replacing a specific kind of business software.
    • SaaS solutions can be used for personal objectives such as email services, cloud storage purpose and file management solutions.
    • Businesses can employ SaaS Services for corporate emails, CRM software, ERP and collaboration tools.

Examples of SaaS:

There are several vendors that offer SaaS solutions and some of them include Cisco WebEx, Salesforce, Dropbox, Google Apps, GoToMeeting, Gmail, Office365, etc.

What is PaaS (Platform as a Service):

PaaS is defined as a cloud platform that offers runtime environment for reviewing, designing, running, and customizing software. The advantage of PaaS systems allows developers to quickly deploy software without any infrastructure requirement. PaaS providers pass on the total infrastructure required for the creation of apps where the code is managed by software developers.

Like SaaS, PaaS follow subscription-based pricing model, but the key difference lies in the level of control offered to users. PaaS moves a little more IT infrastructure burden from client to cloud provider.

While PaaS is currently the least-recognized form of cloud computing, it is growing rapidly. According to recent research, more than 25 percent of enterprises use PaaS in their manufacturing process and more than 50 percent of organizations plan to set up in the future.

When to choose PaaS?

• • • PaaS is effective for software developers who want to dedicate more time on coding, deploying and customizing applications.
    • It is extremely beneficial when huge numbers of software developers are working on a single project.
    • If you want to develop your own customized application, then PaaS cloud model is the preferred choice over others.
    • PaaS offers a perfect environment for developing, managing, testing and customizing apps that makes it an ideal choice for software companies.
    • PaaS is the preferred option when you want to add some other vendors into the process.
    • It is perfectly suitable for businesses having in house apps.

Example of PaaS:

There are many well-recognized PaaS solutions that you’ll find on the market. Some include OpenShift, Heroku, Apache Stratos, AWS Elastic Beanstalk, Amazon AWS, Windows Azure Cloud Services and Google App Engine. IaaS gives you an immense amount of control which requires a high degree of user experience to look after the computing infrastructure.

What is IaaS (Infrastructure as a Service):

IaaS is a kind of virtual data centre that provides infrastructure for computing such as storage, servers and several main networking services. This is extremely lucrative for consumers because they don’t have to buy specialized hardware and configure their parts. Clients can easily install their application into the vendor’s virtual machine, which offers very similar functionality to the physical data centre.

An IaaS system can be use for various purposes, such as analysing complex data and managing multiple websites. On the given infrastructure you can install and run a different type of software and OS. At present, after SaaS, IaaS is identified as the most popular model of cloud computing.

More than 35 percent of businesses use the IaaS model in development, and around 50 percent of organizations expect to use it in the coming time, according to the latest research done by experts.Even though the IaaS service provider takes care of the overall infrastructure, customers can have complete control over it. In fact, the client is responsible for the installation, management, and maintenance of applications. Also, they play a vital role in runtime, protection, data, and middleware. Besides that, before finalizing the correct option, IaaS users have the luxury to compare the efficiency and price of multiple service providers. A dedicated API allows them to access all such important data.

When to choose IaaS:

• • • IaaS can be use for application or website hosting purpose.
    • IaaS is an ideal solution for creating virtual data centers for big enterprises that require highly scalable, efficient and secure server environment.
    • When you need to analyze a large database, you definitely need outstanding computing power. This is exactly where IaaS comes into the picture as it offers the most affordable way to get it done. Organizations can also use infrastructure as a resource for the purpose of data analysis and mining.
    • IaaS is extremely beneficial for small enterprises that haven’t kept any dedicated budget for developing their own infrastructure.
    • IaaS can be also effective if you are running a rapidly growing organization. Even if you are demands are variable, IaaS can get the job done for you very smoothly.
    • If you are running a big organization that wants total control over key infrastructure but needs to pay only for the services used.
    • It is most suitable for businesses that want to transform their current workload to the cloud.
    • Businesses having current software licenses which can be migrate to cloud.
    • It is also ideal for hybrid cloud settings.
    • Big companies having a huge number of IT staff will find the IaaS platform more appropriate over others.

Examples of IaaS:

Some of the best examples of IaaS include Rackspace, Linode, DigitalOcean, Cisco Metapod, Amazon Web Services, Google Compute Engine, and Microsoft Azure.