What should be done with statements or sections which are unclear?

The answer is Clarity.

When there are statements or sections which are unclear, it would be hard to understand or determine the statement. If ever you don't understand, you must clear it out. To clarify, one must ask questions such as to elaborate the point, or ask to express it in another way, or ask for examples.

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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.