When onboarding a PPC project, the first email clients receive is a set of "onboarding" action requests.
Typically, these are links to step-by-step instructions for sharing access to advertising and analytics accounts.  Usually, access to accounts can be shared in a few minutes without issue.  If problems are encountered, we are available to assist.
Some examples of accounts we may request access include Google Ads, Microsoft Advertising, Google Analytics, Google Search Console, Microsoft Search Console, Google and Microsoft Merchant Centers, Google Tag Manager, and related accounts.
Note, access to key accounts is made using agency multi-client accounts, which is time-efficient while protecting both the client's and agency's best interests.