Ad placement quality evaluator Integral Ad Science has closed $30 million in Series D funding round, according to TechCrunch.

The deal was first revealed through a regulatory filing. It has also been confirmed by the company's Chief Executive Officer (CEO) Scott Knoll. According to Knoll, August Capital led the round. Existing investors Pelion Venture Partners and Atlas Venture also participated in the said round. Eric Carlborg of August is joining the board of Integral, the report detailed.

The New York-based company started out as AdSafe. In 2012, it took on a new name as part of its rebranding scheme away from ad verification. The firm instead started focusing on media valuation, or leading advertisers to high-quality impressions, the report explained.

For 2014, Knoll is targeting global growth and incorporating various types of advertising. Integral has been mainly focused on display ads. The firm has recently added video to its offerings, TechCrunch reported.