Most growing eCommerce brands accumulate vendors. An SEO agency, a CRO consultant, a paid media specialist, a developer agency, an analytics consultant. Each one optimizes for the metric their contract measures. The founder ends up as the integration layer.
We run SEO, CRO, performance marketing, development, and analytics under one roof with one accountable team. When the developer changes the checkout, the CRO lead is in the room. When SEO identifies a category-page opportunity, the design and development resources to ship it are already on the team.
This is not a marketing claim. It is the reason we do not take engagements scoped as single-channel. A pure-SEO engagement with the brand running paid media elsewhere will get partial results because the channels do not coordinate.