Before launch, document who controls the domain, hosting, source code, design files, customer data, analytics, backups, and third-party accounts. These assets have different responsibilities and should not be hidden behind a vague handover statement.
Keep recovery methods and administrator access controlled. Ask what is included in delivery, which licences remain external, who pays recurring services, and how the business can continue if another partner needs to maintain the project later.
Before development or a major change, turn this idea into a clear operating agreement: define the people who use the process, the records that must remain trustworthy, the approval boundaries, and the result the business will review. A small pilot with real examples can reveal missing rules earlier than a large build and make later support, handover, and integration safer.