My old school had to switch to Microsoft Teams (from Google Classroom) and the head of ICT told everyone that he thought that Teams website was ridiculously slow, the app moreso, as part of a transition from Google’s suite (Docs, Slides, Drive, Classroom) to Microsoft’s (Word, PowerPoint, OneDrive, Teams)

Pretty much everybody complained about the switch to Teams since it was really slow, sometimes taking several minutes to load the app on older computers (e.g. school computers). I assume they switched to all-Microsoft to reduce costs (I remember being told that, since they were paying for both Office 365 and Google Cloud before), and they mentioned other reasons too (e.g. students overseas in mainland China can’t access Google) but I forgot most of them.