<p>SEATTLE Microsoft Corp., which for decades has refreshed its popular Office corporate software about once every three years, says it will switch to weekly updates.</p><p>Its a radical shift as Microsoft overhauls its Internet programs, seeking to stay in sync with the fast-changing technology industry.</p><p>For much of Microsofts 38-year history, infrequent upgrades made sense for businesses seeking predictable improvements.</p><p>Thats changed as nimbler entrants such as Dropbox, Box, Jive Software and Google refine features and deliver automatic updates over the Web.</p><p><a href="http://www.journalgazette.net/article/20130708/BIZ07/307089986/1031/biz">Keep reading...</a></p>