NodeJS will be used as the runtime for our Javascript backend. There are some alternatives for JavaScript runtimes, such as Deno. However, NodeJS is not only the most popular by far, but also the most familiar to our team. It is incredibly simple to install and set up. It has a huge community of users so it will be easier to find support and it is used by some of the biggest marketplaces in the world so we don’t need to worry about NodeJS not being performant enough.