Apple has made a number of announcements as part of its WWDC 2021 event, and we've got all the details here.
All important announcements made are as follows:
iOS 15 will feature myriad improvements including changes to FaceTime that will help it to align itself as a true competitor to...
I want to say it's one to one, but in all honesty I'm a bit fuzzy there. I can recommend JoyFreak's sister site AdminIntel - Admin & Webmaster Resource where there are lots for people of varying degrees of expertise with development, you likely can get a far more precise answer there!