Identify two advantages and two disadvantages of commercial
off the shelf (cots) software over custom engineered software.
explain why it make sense to use these tools or creating your
own for e-commerce sites.

Ture hoped this

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.

In which career field, would the computing technology industry association's comptia a+ certification be useful?