Error-Correcting Code (ECC) is a method used in computer systems to detect and correct errors that may occur during data transmission or storage. By adding extra bits to the original data, ECC can identify discrepancies and automatically fix them, ensuring that the information remains accurate and reliable. ECC is commonly used in memory systems, such as Dynamic Random Access Memory (DRAM) and Flash memory, to enhance data integrity. It plays a crucial role in applications where data accuracy is essential, such as in servers, databases, and communication systems.