IBM Rational Unified Process (RUP) is an object-oriented and web-enabled software engineering process developed by IBM. It provides a framework for software development teams to create and maintain high-quality software effectively. RUP is based on a set of best practices and guidelines that define the phases, activities, and artifacts required to develop software. It emphasizes iterative, incremental development and includes components such as reusable software components, automated testing, and project management tools. RUP is designed to be adaptable to specific project needs and can be tailored to fit a wide range of software development projects.