Retry logic is a programming technique used to handle temporary failures in communication or processing. When a request fails, the system automatically attempts to resend the request after a specified delay. This approach helps improve reliability, especially in scenarios where issues may resolve themselves, such as network glitches or server overloads. Implementing retry logic often involves setting limits on the number of attempts and defining backoff strategies, which determine how long to wait before each retry. This prevents overwhelming the system and allows for smoother recovery from errors, enhancing the overall user experience in applications and services like APIs and cloud computing.