We've written before about Office 365's popularity as a result of Microsoft's pursuit of the enterprise and massive push to the cloud. But Office 365 isn't the only app winning this game. Many cloud apps — from Box and Workday to relative newcomers Slack, Envoy and Zapier — are collectively taking the enterprise by storm. According to our data, most businesses offer their employees between 11 and 16 off-the-shelf cloud apps. In 2015 that grew 33 percent year-over-year. Our point? A cloud strategy rarely involves a single app. When companies first decide to move into the cloud (for many, it starts with the migration of a core service like email to Office 365 or Google Apps for Work), they must consider the big picture. These organizations must identify a strategy that works not just through that first deployment — and the subsequent management, refinement and expansion required — but.