Copy
Copy comes first. The layout of every page is shaped by what it has to say, so the sitemap, the message of each page, and the copy itself are finalized before design begins. Conversion-focused copy is written to get a visitor to act, not to describe the company.
Working with a marketing agency? They usually own this stage: strategy, messaging, and the content itself. We take it from there. If no one is writing it, it's in scope.
CRO and landing pages