Azure Repos and maybe Pipelines be sunset and replaced by GiHub equivalents, but they’d have a hard time sunsetting the task management (Boards) without first significantly expanding it in Github. Many swear by their hierarchical backlogs, custom column Kanban boards
and complex reporting. GitHub issues is extremely simple in comparison.
They're rolling Planner and Tasks into Teams, I fear they may try to substitute that and Power Bi for DevOps Boards.
Zenhub[1] is a pretty popular UI on top of GitHub that fills that need quite nicely for my team
He recommended using YAML for all Pipeline Development as they were trying very hard to ensure that it would be compatible but legacy pipelines would not.