F8: complete: https://www.youtube.com/watch?v=xK0RwubFi-U highlights: https://www.youtube.com/watch?v=UtxPdezclYw

Microsoft complete: https://www.youtube.com/watch?v=9KzfavvFEsE highlights: https://www.youtube.com/watch?v=YZkp0qBBmpw

Google I/O complete: https://www.youtube.com/watch?v=lyRPyRKHO8M highlights: https://www.youtube.com/watch?v=uBP9K2QJSSs

WWDC complete: https://www.youtube.com/watch?v=psL_5RIBqnY highlights: https://www.youtube.com/watch?v=SAh30bOsvgU