Marketing Spend Analysis

Overview

Marketing spend is typically the largest variable cost in a DTC ecommerce business — often 15–40% of revenue. Unlike most costs, marketing spend is directly controllable in near-real-time: you can increase or decrease budgets on paid channels within minutes. This creates both opportunity (scale what works) and risk (waste capital on what does not).

The core goal is to maximize total contribution profit from your marketing investment — not just revenue. A channel with high ROAS but thin margins, high return rates, or low AOV may generate less actual profit than a channel with lower ROAS and stronger unit economics.

This skill guides you through building a unified view of marketing spend and performance across all channels, using tools designed specifically for ecommerce merchants.

When to Use This Skill

• When managing marketing budgets across multiple platforms (Meta, Google, TikTok, Amazon Ads)
• When wanting to identify which channels generate the most profitable customers
• When needing a unified marketing performance dashboard fed by multiple ad platforms
• When hitting diminishing returns on a key channel and deciding how to reallocate spend
• When comparing platform-reported ROAS against first-party attributed ROAS
• When building a marketing efficiency report for a board or investor update