DSA, or Data Structures and Algorithms, is a fundamental concept in computer science that focuses on organizing and managing data efficiently. Data structures are ways to store and organize data, such as arrays, linked lists, and trees. Algorithms are step-by-step procedures or formulas for solving problems, like sorting or searching data. Understanding DSA is crucial for software development and programming, as it helps developers write efficient code that can handle large amounts of data. Mastering these concepts can improve problem-solving skills and is often a key component of technical interviews in the tech industry.