As we rapidly add customers, the cost to run Office 365 becomes more efficient. This is the beauty of the cloud where we can deliver economies of scale through our worldwide data centers and economies of skill with our engineers, administrators, and support teams operating the service. For example, we take advantage of bigger and cheaper storage, delivering significant efficiencies at scale. With these efficiencies, we’re able pass on savings to make it even more affordable for customers of all sizes to move to Office 365
We’re lowering the prices of most of our Office 365 for Enterprise plans by up to 20%.