Companies included in Facebook’s Preferred Marketing Developer program have raised a total of $915.17 million in publicly disclosed funding, with nearly one-half of that amount going to advertising application-programming-interface vendors, according to research from “decision support system” AlphaBoost.

Facebook officially merged its Preferred Developer Consultant and Marketing API programs earlier this month to create the Preferred Marketing Developer program.

Here are some of the highlights from AlphaBoost’s research: