The L2 cache, or Level 2 cache, is a type of memory used in computers to store frequently accessed data and instructions. It acts as a bridge between the faster L1 cache and the slower main memory (RAM), helping to speed up data retrieval for the CPU. By keeping important information close to the processor, the L2 cache reduces the time it takes for the CPU to access data. Typically larger than the L1 cache, the L2 cache can hold more data but is slightly slower. It is usually located on the same chip as the CPU or nearby, allowing for quick access. This efficient memory management enhances overall system performance, making tasks run smoother and faster.