Apache Maven
Apache Maven is a build automation and project management tool primarily used for Java projects. It uses a Project Object Model (POM) XML file to manage a project's build, reporting, and documentation from a central piece of information. Maven handles tasks like dependency management, compilation, testing, packaging, and deployment through a standardized build lifecycle.
Developers should learn Maven when working on Java-based projects that require consistent builds, dependency management, and standardized project structures. It is essential for enterprise Java development, especially in teams where reproducible builds and dependency resolution are critical, such as in microservices architectures or large-scale applications using frameworks like Spring.