4. Explain the evolution of computer describing the technologies used in different generation​

I’d say platform as a service (paas) or application platform as a service (apaas) or platform base service is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.

Ido not think so i think the more questions you ask they go away