UCAS stands for the Universities and Colleges Admissions Service, which is the organization responsible for managing applications to higher education courses in the United Kingdom. It provides a centralized system for students to apply to multiple universities and colleges, streamlining the process and making it easier for applicants to track their submissions. Through UCAS, students can research courses, check entry requirements, and submit their applications online. The service also offers guidance on personal statements and important deadlines, helping prospective students navigate the often complex journey of applying to university.