Each client should have a completely separate account, not just a separate campaign inside one account. This protects billing, keeps data clean, and makes it easier to manage budgets without mixing things up. Inside each client account, campaigns should be structured based on the client's goals and product or service categories. Using a manager account, which Google calls MCC, lets the agency oversee all client accounts from one place without logging in and out. Clear naming conventions for campaigns also help the team stay organised as the number of clients grows. So what do you think is the hardest part of managing Google Ads for multiple clients at once?