Node.js offers a rich set of performance data through its APIs, similar to how modern web browsers expose performance metrics for webpages. With tools like the Performance Measurement API and the perf_hooks module in Node.js, you can gain insights into your application's performance from the server's perspective, closely aligning with what the end user experiences. In this article, the first of a two-part series about performance hooks, we'll explore how to approach performance optimization in Node.js.