What is the purpose of dispatch queues in GCD?

What is the purpose of dispatch queues in GCD?

The purpose of dispatch queues in Grand Central Dispatch (GCD) is to manage the execution of tasks or blocks of code concurrently or serially. Dispatch queues allow developers to control the execution of tasks in a multithreaded environment, ensuring efficient and optimized performance. They provide a way to distribute work across multiple threads or cores, improving the responsiveness and overall performance of an iOS application. Dispatch queues can be either serial, where tasks are executed one at a time in the order they were added, or concurrent, where tasks can be executed simultaneously.