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Think of Infer as a supercharger for marketers and salespeople — it ranks leads based on how likely they are to spend money. Fast-growing companies are all over Infer’s software, and now Infer has picked up $25 million to develop itself further.

The money will help Infer transform its web-based software into a true self-service tool, which should help Infer close considerably more business for itself, cofounder and chief executive Vik Singh told VentureBeat in an email. But that’s not all.

“Then we have some secret work we’re working on that will end up being the main play for us,” Singh wrote.

But even in its current state, Infer has picked up considerable traction. The startup’s revenue bookings have doubled every quarter for nearly a year and a half. The customer list includes companies like Atlassian, Cloudera, New Relic, Tableau, and Zendesk. And other startups, like 6Sense, Fliptop, and Lattice, have been making inroads with predictive lead scoring, suggesting there’s good value to be mined with this sort of technology.

Meanwhile, in recent months, Infer has launched applications beyond just predictive lead scoring, such as a way to see which Google AdWords campaigns are yielding the best results.

Infer can integrate with Salesforce.com sales lead tracking software as well as marketing-automation tools from Salesforce, Marketo, and Oracle. Looking out, Singh wants to integrate Infer’s software with more tools like data analytics applications.

Redpoint Ventures led the latest funding round. To date the startup has raised $35 million.

Infer started in 2010 and is based in Palo Alto, Calif. Nearly 40 people work for the startup. “Soon a new hire per week,” Singh wrote.

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