Question

Provide a brief description of each of the following cloud service models. Include benefits of each and target users.

• IaaS
• PaaS
• SaaS
• BPaaS

Answer 1

Infrastructure as a Service (IaaS) :

• Here the cloud provider hosts components of infrastructure.
• It provides storage and networking infrastructure.
• It includes monitoring, billing, security, log access etc..
• The customers access all these resources through internet.
• Using this customers can create virtual machines and install operating system on this.
• It is faster, easier and cost efficient to operate.
• Eliminate the cost of buying hardware and software.
• The targeted users are those who work on Big data, those who in need of enabling add on services.

Platform as a Service (PaaS) :

• In this cloud service model the providers provide hardware and software for their customers.
• Used to develop applications and services.
• These are accessed through internet.
• The benefits are that the customers not need to install high cost hardware and software on their building.
• Users can install and run applications.
• It also provides platforms needed for software developing, compiling , testing etc..
• It provides simplicity and convenience.
• The target users include enterprise users who need to manage many application easier, those who start with small deployments etc..

Software as a Service (SaaS):

• Here the providers will provide application that can be used by users through internet.
• By using this , the users not need to install the application in their own computers.
• It gives automatic update to the application and hence the users not need to worry about update issues.
• This model is similar to application service provider.
• We can access this software through our web browsers.
• The targeted users are users who manage documents, who use accounting software etc..
• The main benefit is that it reduce cost.

Business Process as a Service(BPaaS) :

• It is a business process.
• This type of process is based on above cloud service models such as IaaS , PaaS, SaaS.
• It uses related services.
• It use an API to connect between the related services.
• It reduce the number of labors by increasing the automation.
• The benefits are it can bring a improved technology, increased efficiency, reducing costs etc..
• The target users include users who need to transfer fund automatically, etc..