When you're using libraries, you're actually making your own custom framework. Because a framework is basically a set of libraries that work together to help you get to a certain goal. If there's already a framework that helps you get to a certain goal, it can save you a lot of work to use that existing framework instead of making your own. It can also save you a lot of security issues. But if your requirements don't…
A framework IS the entry point to your application. If you use libraries you write your own entry point.