Complex sentence: The Surface Hub is a brand of interactive whiteboards developed and marketed by Microsoft, as part of the Microsoft Surface family and were unveiled on January 21,2015 at the Windows 10 Event in Redmond.
Split into simpler sentences: The Surface Hub is a brand of interactive whiteboards developed and marketed by Microsoft, as part of the Microsoft Surface family. The brand was unveiled on January 21,2015 at the Windows 10 Event in Redmond.