Google is still an advertising company, but the tech titan’s cloud business is growing faster than its advertising revenue. That’s one of the key take-aways from the company’s first quarter earnings report released Thursday.

Google Cloud Platform is one of the fastest-growing lines of revenue across Alphabet, the parent company that includes Google and other businesses like self-driving car maker Waymo, company CFO Ruth Porat said on a conference call with analysts. That growth is driven in part by a change in the way companies are working with Google Cloud.