Source: http://www.webliquidgroup.com/blog/online-word-of-mouth/display-advertising-technology-landscape/
Earlier this year, GCA Savvian published an infographic called the
“Display Advertising Technology Landscape” (subtitled: Dynamic
Environment Ripe for Consolidation) which instantly sprung up on a wide
range of industry blogs and publications. It’s a graphical
representation of all the middlemen in the relationship between
advertisers, publishers and consumers — all within a digital context.