Spending on ESN products grew almost 40 percent last year to US$767.4 million, and is expected to increase at a 42 percent compound rate through 2016, when it will reach almost $4.5 billion, according to IDC.
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Key enterprise social-networking features are missing from Google+ in Google Apps IDG News Service - Google may be moving too slowly in building up Google Apps' enterprise social networking (ESN) features, at a time when this type of software has become a key component in workplace collaboration suites.
