The Adapter Pattern is a structural design pattern that allows incompatible interfaces to work together. It acts as a bridge between two incompatible systems, enabling them to communicate without modifying their existing code. This is particularly useful when integrating new components into an existing system. In software development, the Adapter Pattern is often used when a class needs to interact with an interface that it does not directly implement. By creating an adapter class that wraps the original class, developers can convert the interface of one class into another that clients expect, facilitating seamless integration and enhancing code reusability.