Money & metrics · also called scale, scaling up
Scaling
Scaling is increasing a profitable campaign's ad spend to earn more total profit, ideally without eroding the return that made it worth growing.
Finding a campaign that returns 30% on $100 a day is the easy part. Scaling is the attempt to keep something like that return at $1,000 or $10,000 a day.
Returns usually fall as spend rises, for mechanical reasons. The cheapest, most responsive audience is bought first; reaching more people means paying more per click. Big budget jumps can reset the learning phase. Creatives wear out faster (ad fatigue). On the selling side, a feed cap may limit how many searches are monetised, and a sudden rise in volume attracts closer scrutiny of traffic quality.
There are two routes. Vertical scaling raises budgets on what works, in measured steps. Horizontal scaling duplicates the idea into new countries, keywords, creatives or traffic sources. Both need three things beyond a good ad: cash for the growing cash-flow float, a feed partner told in advance, and monitoring that catches a quality slide before it becomes a clawback. The target when scaling is total profit, not the prettiest percentage.
An example
Say $1,000 a day earns 30% ROI: $300 profit. At $5,000 a day ROI drops to 15%: $750 profit. At $10,000 it drops to 6%: $600. The most profit is at the middle level, not the largest.
Related terms
Learning phase
The learning phase is the early period after launching or significantly editing a campaign, when the platform's algorithm is still testing who to show the ad to.
Cash-flow float
Cash-flow float is the money an arbitrage business must fund between paying for traffic today and receiving the matching feed revenue weeks later.
Feed cap (traffic cap)
A feed cap is a limit on how much traffic, how many requests or how much revenue a publisher may run through a search feed in a set period.
Ad fatigue
Ad fatigue is the decline in an ad's performance as the same audience sees it repeatedly and stops noticing or clicking it.
ROI (return on investment)
ROI is profit expressed as a percentage of what was spent: revenue minus cost, divided by cost.
Concentration risk
Concentration risk is the danger of depending too heavily on one feed, one traffic source, one keyword group or one account, so a single failure hurts the whole business.