Dropbox, valued at $4 billion by venture capital investors, is viewed as a hot prospect for an initial public offering within the next two or three years.ĭropbox said Wednesday it would let users store files in separate accounts in order to separate their personal and professional lives.

The upgrades reflect the changing business focus at Dropbox - one of the most closely-watched privately held Internet companies - toward becoming a file-sharing solution for corporate customer, a critically important and lucrative market. The new features come at a time when large rivals like Microsoft Corp and Amazon Inc and smaller competitors are battling to win the cloud-storage market, which is widely seen as a strategic linchpin in the era of mobile computing. SAN FRANCISCO, Nov 13 (Reuters) - Dropbox Inc on Wednesday unveiled what it described as one of the most comprehensive upgrades to its service for businesses, including a feature that allows users to easily maintain both personal and corporate accounts.

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