In our development lifecycle, we face the situation where we need to create a custom URL for our module or we need to modify the route to match the requirement, in this situation we need to create a custom router in Magento 2
Grunt is basically a task runner tool that helps to automate any compilation process. Grunt supports tasks like saas, jade, less, and many more.
CSP is a standard introduced to prevent attacks on your website. Attacks mean an XSS, clickjacking, or malicious code injection. CSP is widely supported by all the modern web browsers and it gives privilege to website owners to approve origins of content that browsers should be allowed to load on that website.
Profiler in simple language can be considered as a program, which helps to check and report the performance of another program.
As an extension developer we all know the importance of coding standards and removing unwanted code from our extension, in short, maintaining the code quality. We can get help from GrumPHP to validate our code and pass all quality checks.