Fun fact: the first product we announced to celebrate Cloudflare’s launch day anniversary was a IPv4<->IPv6 gateway:
https://blog.cloudflare.com/introducing-cloudflares-automati...
The success of that convinced us we should do something to improve the Internet every year to celebrate our “birthday.” Over time we ended up with more than one product that met that criteria and timing, so it went from a day of celebration to a week. That became our Birthday Week. Then we saw how well bundling a set of announcements into a week was so we decided to do it other times of the year. And that’s how Cloudflare Innovation Weeks got started, explicitly with us delivering IPv6 support back in 2011.