Before you delve into frameworks, languages and technologies used by backend developers, there are certain things you should be comfortable with.
First and foremost, understand what a server is and what the different kinds of servers are. Thanks to movies and popular culture, people are intimidated by the idea of a server. But it isn’t that complex at all. You’ll know once you start learning.
Second, learn about what a database is and the different kinds of databases out there.
Third, gain a fundamental understanding of what HTTP is. The communication between the server and the client (i.e. the “user” of the application — your web browser for example) happens by means of certain rules (a “protocol”) and you should have an understanding of how this protocol works.
Fourth, you should know what an Application Programming Interface (API) is. Further, understand the difference between REST APIs and SOAP APIs.
Where should you learn about all these? I recommend you start with a Google search. Read a few articles or watch videos relating to each topic. Different people have different ways of learning that work for them. Figure out what works for you.
It is important to point out that many believe you shouldn’t jump straight into backend development without having some experience with web frontend development first. This isn’t a hard and fast rule, but I personally recommend it too. Learn some HTML, CSS and JavaScript before you dive headfirst into backend. If you’re looking to start web frontend, this article might be a good place to start.
At this point, you should have a fair understanding of what you’ll be doing as a backend developer. Once your fundamentals are clear, you’re ready to start writing actual code.

Read more: https://itmaster-soft.com/en/backend-development