With AI enabling precise control over media spend, key performance indicators are changing. Brands now move beyond simple Return on Ad Spend (ROAS) to more sophisticated metrics like incremental ROAS and contribution margin, reflecting a new emphasis on profitable growth rather than just volume.

ROAS (Return on Ad Spend) is a vanity metric that can mask unprofitable customer acquisition. By focusing on POAS (Profit on Ad Spend), brands are forced to measure the actual profit generated from advertising, linking marketing directly to bottom-line health and avoiding the trap of 'growing broke'.

When a business with 50% gross margins achieves a 4-to-1 return on ad spend (e.g., $20 CAC for an $80 order), the primary focus should be on scaling that proven channel, not prematurely diversifying into unproven, potentially lower-performing ones.

Resident's team doesn't set fixed goals (e.g., "Meta must hit 200% ROAS"). Instead, they constantly evaluate channels relative to each other in real-time. This flexible approach allows them to dynamically shift budget to the most efficient platforms as market conditions change, maximizing overall yield.

If your best days generate a return on ad spend (ROAS) far above your profitability target, it's a mistake. This indicates you could have spent more aggressively to acquire more customers and drive more overall profit, even if it meant bringing the ROAS down closer to your goal.

Escape the trap of chasing top-line revenue. Instead, make contribution margin (revenue minus COGS, ad spend, and discounts) your primary success metric. This provides a truer picture of business health and aligns the entire organization around profitable, sustainable growth rather than vanity metrics.

Instead of judging each marketing channel's Return on Ad Spend (ROAS) in isolation, contractors should measure overall ROAS. This approach accounts for the entire customer journey and exposes whether operational weaknesses, not just marketing, are hindering revenue generation from incoming leads.

CMOs often err by presenting the board with operational marketing metrics. Instead, they should emulate a manufacturing leader, focusing reports on the final output: the number of profitable customers acquired. Tactical KPIs are for managing the team, not for the boardroom.

Optimizing for cheap leads can attract low-quality subscribers who don't convert. MarketBeat found greater profitability by paying more per subscriber from reputable sources, which resulted in a much higher return on ad spend (ROAS).