Data Structures and Algorithms (DSA) form the backbone of computer science and programming. Data Structures refer to the way data is organized, stored, and manipulated, while Algorithms are step-by-step instructions for solving specific problems or performing tasks. DSA is essential for efficient problem-solving, optimizing code performance, and improving system scalability. Mastery of DSA is crucial for developers, as it underpins everything from application development to competitive programming and technical interviews.