A Google-wide username and password that can be used to access various products, including Google Ads.

• Your Google Account also contains information that applies across products, such as your preferred language and some privacy settings.
• If you created a Google Ads account or have signed in to access any Google product, then you've created a Google Account.
• A Google Account can be associated with up to 5 Google Ads accounts, including manager accounts.
• You can view and change the information in your Google Account at any time by signing in at google.com/accounts

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* Nguồn: Google