Its use is strictly limited to external communication with parties that still rely on it, such as the European Commission. Even then, strict rules apply: no sensitive information may be discussed on Teams, and usage is kept to an absolute minimum. This hybrid approach reflects a pragmatic recognition that complete independence is not always immediately possible when external partners remain locked into US platforms.
yes, it is a pragmatic choice. Similar to us, we don't use any GAFAM but still use Teams because clients do.