Revenue increased $4.8 billion or 18%.
Server products and cloud services revenue increased $4.5 billion or 21%, driven by Azure and server products licensed on-premises revenue growth. Azure revenue growth of 91%, due to higher infrastructure-as-a-service and platform-as-a-service consumption-based and per user-based services. Server products licensed on-premises revenue increased 5%, mainly due to a higher mix of premium licenses for Windows Server and Microsoft SQL Server.
Enterprise Services revenue increased $304 million or 5%, driven by higher revenue from Premier Support Services and Microsoft Consulting Services, offset in part by a decline in revenue from custom support agreements.
Operating income increased $2.4 billion or 26%.
Gross margin increased $3.1 billion or 16%, driven by growth in server products and cloud services revenue and cloud services scale and efficiencies. Gross margin percentage decreased, due to an increased mix of cloud offerings, offset in part by gross margin percentage improvement in Azure.
Operating expenses increased $683 million or 7%, driven by investments in commercial sales capacity and cloud engineering.