Almost 10 years ago. In the meantime, 10+ new applications have been added and more than 1,400 new features and improvements have been implemented on the 365 platform. Just last year, for example, Microsoft Teams has become 50% more efficient so that meetings and collaboration are increasingly smooth.
Do you already know Planner, Sway, Lists, OneNote, etc.? All super handy tools that do not require you to purchase additional software and allow you to collaborate better and more efficiently with data, applications and communication with colleagues and externals.