Why choose Node?

Node suits I/O-heavy systems well, e.g. an API that integrates a database and external services. It lets you use JS/TS on both sides and draw on a broad ecosystem.

In an interview: I justify the choice by the workload type, the team's skills, operational requirements and the libraries available.

Example: a server waiting on several services can handle other requests in the meantime.

Pitfall: Node isn't always faster than other technologies. Heavy computation needs e.g. worker threads, separate processes or a specialised service.