Node.js is single threaded and maintains a task queue to deal with handling requests including completed async operations. Go is multithreaded and uses a scheduler to manage concurrency. The async/await was introduced to make code more readable when dealing with callbacks. The difference you'll see in comparing a single threaded language to a multi threaded language will be in memory usage. See this article: https://dev.to/ocodista/node-vs-go-api-showdown-4njl#:~:text=Node%20kept%20a%20lower%20and,(almost%20tripling%20Node's%20peak).