The conference Microsoft Build 2020, like all conferences of this kind, is aimed at developers. It focuses on helping developers learn, get to know and write code. It is one of the most recognized developer conferences of the year.
If you want to watch it, you can sign up for the Microsoft Build page.
The registration page reports about the upcoming conference Build:
Enjoy the latest technologies and learn new ways to solve your development challenges. In Microsoft Build, you will meet the engineers behind the products you use every day and you will communicate with your peers. Bring your questions and curiosity to Seattle and leave with inspiration and new skills to use and share.
While the Build is a developer conference, ordinary users often have their eyes on it as various things are announced. Last year the Microsoft announced new features for the new Microsoft Edge discussed new ways in which Cortana could help people, outlined plans to expand the Fluent Design system, introduced changes to the Windows Terminal, and introduced a Minecraft game.