The software merely contained a subset of features available in the subscription-based alternative. Office 2019, it said, was for customers who in 2018 'aren't ready for the cloud'. But rather than highlight major new features included in a perpetual license for Office 2019, the company stressed it was inferior to Office 365 ProPlus, which in its view is 'the most productive and most secure' with the 'lowest total cost of ownership for deployment and management'. Microsoft rolled out its on-premise Office 2019 suite for Windows and Mac in September.