With cloud adoption gaining momentum in India, various industry verticals seem to be head over heels in leveraging the advantages of cloud.

But is the hype over the cloud for real?

Will industries really benefit by the cloud?

Before we answer these questions, let us first try to understand what cloud computing is, and why it is considered a disruptive technology. 
Simply put, cloud computing is on-demand provisioning of computing resources such as compute power, storage, application and other Information Technology resources. 

The provisioning agencies can be cloud hosting providers delivering services via the internet on a pay-as-you use basis.

There is no any doubt that cloud computing has come to stay.  Whether you are delivering media content via streaming, or performing business critical operations, the cloud is providing rapid access to flexible and cost effective IT resources. 

One of the underlying advantages of cloud computing is, it is offering developers and Information Technology managers the capability to focus on their core activity and avoid routine work like upkeep, procurement and capacity planning.
 
Cloud is considered disruptive because it is eliminating the need to own and manage hardware infrastructure. With cloud, no more scaling up or down by hardware and data centers, and no more the need to backup and manage uptimes. 

In short with the underlying advantages the cloud approach has become standard.
 
Now any business can sign up for a PaaS or IaaS and be up and running in no time. 

What are these terminologies SaaS, PaaS and IaaS we are hearing of so much these days?

These are three main computing models of the cloud computing stack. 

1. SaaS or software as a service provides clients with a completed product that is run and managed by a hosting provider. In a nutshell it is end user application. Users need not bother how the underlying infrastructure is maintained. The most common example of SaaS is web based email where users send and accept emails without maintaining servers. 

2. PaaS or platform as a service is a cloud computing model that provisions applications over the internet. The providing service delivers hardware and software tools so that the user can go ahead with application development. Because the host maintains the hardware and software on its own infrastructure, the user is free from having to install in-house hardware. 

3. IaaS or Infrastructure as a service is another form of cloud computing model wherein inclusive cloud computing resources are provided over the internet. IaaS is completely comprehensive in that a third party provider provisions hardware, software, storage and other infrastructure mechanisms on behalf of the clients. 

The last mentioned that is IaaS offers highly scalable resources that can be provisioned on demand. This model eliminates the capital expenses of deploying in-house infrastructure. Nevertheless the IaaS environments must be closely monitored so that the client is not overcharged for excess services. 

IaaS is offering numerous benefits to enterprise customers, a good reason why it is popular with BFSI, Healthcare and ecommerce stores.
As one IT manager rightly pointed out, “IaaS is ideal for business clients because it helps them create cost effective and easily scalable solutions. They can forget the complexities and costs of managing the essential hardware because the cloud host takes care of these things”. 

The chief benefits of IaaS are:

• Scalability – Robust verticals such as BFSI and healthcare need resources as and when needed so that there are no delays in expanding capacity. IaaS delivers this feature comprehensively. 

• No Capital Expenditure – The primary hardware supporting IaaS is provisioned by the cloud hosting provider in no time. The service is accessed by the user on demand on a pay-as-you-use basis. This is an ideal situation for BFSI, Healthcare and ecommerce stores that are hard pressed for CAPEX.

• Anywhere anytime access – IaaS offers location independence. Users can access wherever internet is available as long as the security protocol is adhered to.  

• Less chances of outages – With multitude of hardware resources available there is very little chance of the service failing. 
Easy access to essential services is what makes IaaS popular with not only BFSI, Healthcare and ecommerce stores but with other industry sectors as well. 

Adopting IaaS is now becoming a strategic shift in operations specifically in BFSI sector. 

Another compelling benefit is cloud providers have dedicated staff assigned to assist clients on technical matters and to maintain the highest level of security. 

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