Performance improvements are a never-ending journey. The key is to strike the right balance. As noted above, we made significant progress on speed in 2019. But that is not the end of the story. Going forward, we have put a few things in place that will always keep us on the edge when it comes to performance.

• A committee of Speed Champions
• Synthetic monitoring to check budgets before each release
• Adaptive speed budgets
• RUM and interactivity metrics (FID, TTI)

[…] these checks don’t come for free. They can have a significant impact on web performance depending on what browser a user is using, and the location they are browsing from. And if a site uses an EV certificate, it is forcing the most popular browser on the planet (Chrome) to open a revocation check, which will have an impact on performance for those users who visit your site using it. It makes you wonder if the ‘perceived’ advantages of using an EV certificate are really worth it? Personally, I don’t see any advantages, only disadvantages.