Commercial Other revenue increased $1.9 billion or 33%, due to higher Commercial Cloud revenue and Enterprise Services revenue. Commercial Cloud revenue grew $1.5 billion or 116%, due mainly to higher revenue from Office 365 Commercial. Enterprise Services revenue grew $380 million or 9%, due mainly to growth in Premier Support Services.
Commercial Other gross margin increased $935 million or 102%, due to higher revenue, offset in part by a $952 million or 20% increase in cost of revenue. The increase in cost of revenue was due mainly to higher datacenter expenses, reflecting support of our growing Commercial Cloud.