> today's best practices Speed has always been a good practice for as long as the web has existed. The specific metric changes, but the goal is the same. It's

> today's best practices Speed has always been a good practice for as long as the web has existed. The specific metric changes, but the goal is the same. It's just that "simple" metrics are very easy to game. An example of this is how they went from "First Paint" to "First Contentful Paint" to "Largest Contentful Paint". They're all trying to get at the same concept, which is when the page loads, but each iteration gets more precise and accurate. Realistically, as a webdev, if your site loads fast, it shouldn't matter which metric is used.