Which are the main technologies or languages ​​for backend?

Answer 1

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Answer 2

The most popular are JavaScript(Node), PHP, ASP.NET, Python and Ruby(Rails). Others include Java, Go, Rust.

Choosing the right tool can be difficult and it depends on your locality. However I will highlight the main advantages of some of this.

1. Node - Is an runtime environment for server side JavaScript. If you are looking to develop web apps entirely in JavaScript or your apps depend greatly on npm frameworks you should probably learn Node and eventually Express for making RESTful web services.

2. PHP - My language of choice. It is very easy for beginners to grab and is the most popular server side language. Combined with Symfony it is easy to create a MVC architecture web application. It is mainly an OOP language. WordPress, the most popular CMS, is written in PHP

3. Python, like PHP, is also beginner-friendly and widely used. The two most used frameworks for the web are Django and Flask.