Applying a single attribution model, like last-touch, to all channels is a mistake. It undervalues top-of-funnel activities and can lead to budget cuts that starve the pipeline. Instead, measure each channel based on its intended outcome and funnel stage.

Over-relying on last-click measurement is like only crediting the striker for a goal, ignoring the midfielders and defenders. This flawed logic causes marketers to over-invest in bottom-funnel "strikers" (e.g., branded search), creating a dysfunctional team that ultimately loses.

Establish a single, blended CAC target across all marketing channels. As long as your total spend stays below this number, you have the flexibility to continue spending and experimenting with new channels without being beholden to the short-term performance of any single one.

Using a blended CAC doesn't mean ignoring individual channel performance. Use the blended number as your high-level strategic guide. When it rises, dive into the siloed, channel-specific metrics to diagnose the root cause of underperformance and make tactical adjustments.

A blended CAC across all channels hides crucial information. By calculating CAC for each individual platform or method (e.g., paid ads, content, outreach), businesses can identify their most efficient channels. This allows them to reallocate budget and effort to the highest-performing areas for more profitable growth.

The question modern attribution should answer is not "Which channel gets credit for this dollar?" but "What are the commonalities across our most successful buying journeys, and how can we replicate them?" This moves from a simplistic, linear view to a more holistic, pattern-based understanding of customer acquisition.

Solely crediting the final touchpoint, like a branded search ad, ignores the awareness efforts that drove the search initially. This flawed view leads to underinvestment in crucial top-of-funnel activities, ultimately starving your future pipeline of potential customers.

Go beyond standard W-shaped or last-touch attribution models. Create "influence reports" that measure the sheer frequency a channel appears in any revenue-generating journey. This provides a different lens, showing which channels are consistently present and influential, even if they don't get direct attribution credit.

Solely judging marketing by last-touch attribution creates a false reality. This narrow metric consistently favors predictable channels like search and email, discouraging investment in brand building and creative storytelling that influence buyers throughout their journey. It's a losing battle if it's the only basis for decision-making.