What is a Websocket? How it used in Modern & Rich Financial Applications?

It is a realtime streaming protocol providing full-duplex communication between applications over a single TCP connection

Know more about Algomojo API
https://algomojo.com/blog/what-is-algomojo-api/

Algomojo – Automate your Trading ideas with Free API + Free Trading Platform
https://algomojo.com/

Algomojo API Documentation
https://algomojo.com/docs/