Microsoft Corp. unveiled a new strategy to move software and services online, seeking to fend off a growing threat from Google Inc. and other nimble upstarts born on the Internet.With a new web site called ‘‘Windows Live,’’ Microsoft hopes to create a new platform that will unfasten some of its applications from computer hard drives.The site, available at , repackages some of the features Microsoft already offers at MSN.com‘‘It’s a revolution in how we think about software,’’ Microsoft chairman Bill Gates said on Tuesday.Microsoft’s online push represents its most ambitious attempt yet to adapt to the challenges and opportunities posed by the Internet while protecting its core franchise of licensing software for installation on a single computer — a business that made it one the world’s most profitable companies. —Agencies
