async-foreach provides an asynchronous, parallelized alternative to JavaScript's forEach array method. It iterates over an array, executing an asynchronous function for each element. Unlike standard forEach, it waits for each asynchronous function to complete before moving to the next. This allows you to perform I/O or other asynchronous operations within your loop without encountering race conditions or unexpected behavior. It's perfect for processing data in batches or performing asynchronous tasks on each element of an array concurrently.