In 2011, Microsoft products were retagged to include Microsoft in the tag title. (See 'Can we please standardize the Microsoft tags?')
Because of this, we have consistently named tags for microsoft-office, microsoft-excel, microsoft-word, microsoft-visio, microsoft-powerpoint, microsoft-outlook, and microsoft-access.
Ironically, we somehow managed to miss retagging the most potentially confusing Microsoft tag.
I propose retagging exchange and all its versions as microsoft-exchange both for consistency, and to prevent confusion with the Stack Exchange network.
