⚡ Tier 2 - ImportantID: reachCurve
Reach Curve & Diminishing Reach
How audience reach flattens as media spend increases on a channel
In Simple Words (Zero Jargon):
A graph showing that the first $1,000 reaches lots of new people, but spending $10,000 mostly just shows ads to the same people again.
Why It Is Critical
As budget scales on an ad set or channel, the algorithm runs out of fresh unique users and begins showing ads repeatedly to the same people. Recognizing when the reach curve flattens signals when to reallocate budget to secondary channels.
What You Get: Visual evidence of when a channel is approaching saturation - the signal to redistribute budget rather than continuing to over-invest in a flattening audience.