Across the digital advertising landscape, publishers are reporting a sharp decline in revenue from both Google AdX and AdSense. This unexpected slump has left many questioning what's behind this sudden shift in fortunes. Some industry experts point to increased competition from alternative ad networks, while others attribute the economic downturn.

The online advertising landscape is experiencing/has seen/faces a major shakeup with significant declines in both AdX and AdSense revenue. Publishers and advertisers/marketing professionals/content creators are concerned/baffled/alarmed by this trend, searching/analyzing/investigating for answers as to what's driving this sudden/steep/dramatic drop