`std::future` is a feature in the C++ Standard Library that allows you to work with asynchronous operations. It represents a value that may not be available yet but will be computed in the future. You can use `std::future` to retrieve the result of a computation once it is ready, enabling efficient management of tasks that run concurrently. To create a `std::future`, you typically use it in conjunction with `std::async`, which starts a task in a separate thread. Once the task is complete, you can call the `get()` method on the `std::future` object to obtain the result. If the task fails, calling `get()` will throw an exception, allowing you to handle errors effectively.