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Question: What are the advantages and disadvantages of PaaS layer?

Answer: Advantages of PaaS cloud computing layer
1) Simplified Development

Developers can focus on development and innovation without worrying about the infrastructure.
2) Lower risk

No requirements of up-front investment in hardware and software. Developers only need a PC and an internet connection to start building applications.
3) Prebuilt business functionality

Some PaaS vendors also provide already defined business functionality so that users can avoid building everything from very scratch and hence can directly start the projects only.
4) Instant community

PaaS vendors frequently provides online communities where developer can get the ideas, share experiences and seek advice from others.
5) Scalability

Applications deployed can scale from one to thousands of users without any changes to the applications.
Disadvantages of PaaS cloud computing layer
1) Vendor lock-in

One have to write the applications according to the platform provided by PaaS vendor so migration of an application to another PaaS vendor would be a problem.
2) Data Privacy

Corporate data, whether it can be critical or not, will be private so if it is not located within the walls of the company there can be a risk in terms of privacy of data.
3) Integration with the rest of the systems applications

It may happen that some applications are local and some are in cloud. So there will be chances of increased complexity when we want to use data which in the cloud with the local data.

Advantages of PaaS cloud computing layer
1) Simplified Development

Developers can focus on development and innovation without worrying about the infrastructure.
2) Lower risk

No requirements of up-front investment in hardware and software. Developers only need a PC and an internet connection to start building applications.
3) Prebuilt business functionality

Some PaaS vendors also provide already defined business functionality so that users can avoid building everything from very scratch and hence can directly start the projects only.
4) Instant community

PaaS vendors frequently provides online communities where developer can get the ideas, share experiences and seek advice from others.
5) Scalability

Applications deployed can scale from one to thousands of users without any changes to the applications.
Disadvantages of PaaS cloud computing layer
1) Vendor lock-in

One have to write the applications according to the platform provided by PaaS vendor so migration of an application to another PaaS vendor would be a problem.
2) Data Privacy

Corporate data, whether it can be critical or not, will be private so if it is not located within the walls of the company there can be a risk in terms of privacy of data.
3) Integration with the rest of the systems applications

It may happen that some applications are local and some are in cloud. So there will be chances of increased complexity when we want to use data which in the cloud with the local data. Source: CoolInterview.com

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