The enterprise SaaS market grew 31 percent year over year, totaling almost $15 billion in revenue in Q2 2017, according to Synergy Research. Collaboration was the highest growth segment. Microsoft is the clear leader in overall enterprise SaaS revenues, having overtaken Salesforce a year ago. Microsoft’s acquisition last year of LinkedIn gave its SaaS operations a significant boost. “Across its whole business, Microsoft has a good cloud-oriented vision in place and is executing strongly,” said John Dinsdale, chief analyst at Synergy Research.