Each of the following performance APIs is in different stages of the W3C’s specification maturity process. You can see each spec’s stage next to their title. Visit this article for a concise graphic of all the performance APIs’ maturity levels.
The use of APIs to Boost Performance
If you are actively wondering why you need to look at getting APIs into your system in the first place, you are not alone. Plenty of people have questioned what is so important about APIs and why it is that they need to focus on them, to begin with. They have a multitude of questions, but the answer all boils down to the fact that APIs provide real data that programmers can use to judge their own performance.