In Angular, Route Guards are used to control the access of users to certain routes based on defined conditions. They act as gatekeepers, ensuring that users meet specific requirements before navigating to a route.

SonarQube is an open-source platform developed by Sonar Source to perform continuous inspection of code quality for automatic reviews through static analysis of code for bugs, code smells, and security vulnerabilities. It supports various programming languages, such as Java, C#, JavaScript, TypeScript, Python, and many others.

GraphQL is a query language for your API, as well as a server-side runtime for executing queries based on the type system you define for your data.