A day before its quarterly results, AOL has announced another acquisition to beef up its ad tech operations. It is buying Convertro, a marketing optimization platform, for $101 million – $89 million in cash, $2 million in converted stock awards and a $10 million earn-out over 17 months. AOL says that it will be integrating Convertro’s service into AOL Platforms, covering services like Adap.tv, AdLearn Open Platform, and ONE.