Promises in JavaScript act as placeholders for values that will be resolved or rejected at a later time.
The Event Loop in JavaScript manages the execution order of code by coordinating between the Call Stack, Web APIs, Callback Queue, and Microtask Queue.
Promises' .then() method is placed in the Microtask Queue, giving them priority for execution over tasks like setTimeout.
Understanding how the Event Loop handles promises helps in grasping why certain code might execute in a particular order.