The Difference Between Spring Boot, Spring MVC, and Servlet

In this video, we will consider the difference between Spring Boot, Spring MVC, and Servlet. How they link with each other, what kind of abstraction Spring MVC brings for us, and how it works under the hood using Servlet API.
If we got how it works, we could use framework abstraction easily. No more magic in the Request and Response parts of the framework.

[ripanjankar]

Is it necessary to master servlet before learning Spring or springboot?

[ripanjankar]

Or just a general knowledge of servlet works ?