Here you can read about the advantages of using Promises, it s very interesting, though a bit long. https://blog.jcoglan.com/2013/03/30/callbacks-are-imperative

Here you can read about the advantages of using Promises, it s very interesting, though a bit long. https://blog.jcoglan.com/2013/03/30/callbacks-are-imperative-promises-are-functional-nodes-biggest-missed-opportunity/ https://blog.jcoglan.com/2013/03/30/callbacks-are-imperative... Promises are easier to compose because you can pass them around as values. Meanwhile callbacks are used only for their side-effects, they do not return anything.