By tying together all these different products, Microsoft is making an aggressive move to try to wipe out the many startups that have sprung up in recent years to provide point solutions for enterprise collaboration, cloud file storage, and sharing and productivity applications, Koplowitz said.

"Microsoft is following a strategy of bundling and integrating products, making them work well together really well, and pushing down competitors' products to the level of features, so it can own the knowledge worker experience from end to end," he said.

Microsoft is also stressing the point that Office is available across a variety of Windows 7 and Windows 8 devices, including desktop PCs, laptops, tablets and smartphones. It will also be available for Mac OS desktops and laptops.

However, a gaping hole in this strategy is Microsoft's silence and apparent reticence to create versions of Office for non-Windows tablets and smartphones, in particular iOS and Android devices.

Both at home and at work, people are using a variety of devices -- Windows and Mac OS desktops and laptops, iPads, iPhones, Android smartphones and so on -- and expect applications and data to be available across them.