As java developer and architect I like the following features in intellij 1. Code assistance - Intellij having strong code autocomplete feature, syntax highlighting, warning highlighting, intelligent suggestions, etc boost the productivity. It also recommend the best practices which also give advantage in the big projects. 2. Tools - Intellij having all the required tools are in built so the developer need not to use multiple tools. For example, version control, DB tools, docker, plantUML, etc 3. Debugging and Testing - Intellij Debugging and testing tools are robust and offers live debugging and live inspection of code. Even we can supply new test value while doing debugging as well without restarting the application. It also provide integration with almost all the testing frameworks like Junit, TestNG, Karate, Selenium, etc.

It works very well with GitHub-copilot which eases the development.

It is an powerful tool, I really like its ease of use