Programmatic advertising includes four main types: Real-Time Bidding (RTB) for open auctions, Private Marketplace (PMP) for invite-only bids, Preferred Deals for first-look fixed rates, and Programmatic Guaranteed for direct automated agreements. Each suits different publisher needs, from high-volume open competition to premium reserved inventory. Explore details here: https://newormedia.com/blog/types-of-programmatic-advertising/