This document discusses consolidation in the ad tech industry. It notes that Google and Facebook now own 85% of internet advertising growth. With decreased VC investment, only the best of breed companies will survive. Factors driving consolidation include a lack of market maturity, rise of programmatic advertising, limited market share, fragmentation, and fraud. Options for companies include M&A, private equity investment, or finding profitability. The document recommends investing in companies with unique value propositions, defensible business models, and profitability. Recent ad tech acquisitions are also summarized.