About Google Contacts
The address book that predates the CRM in most companies.
Google Contacts is the contact directory inside Google Workspace and on the free Google account. It stores names, email addresses, phone numbers, postal addresses, organisations, job titles, birthdays, custom fields and notes for every person a Workspace user has corresponded with or added by hand. The web app lives at contacts.google.com, and the data is reachable via the People API (the successor to the older Google Contacts API) with separate surfaces for the user's own contacts, the auto-saved Other contacts list, and the Workspace directory.
For a lot of small companies it is the de-facto CRM. The founder, the office manager and the first sales hire all add prospects, customers and suppliers as Google contacts long before anyone signs a HubSpot or Salesforce contract. For mid-market teams that do have a CRM, Contacts is where personal phone numbers, home addresses and the supplier handyman live, the records that never made it into the CRM and never will. In a warehouse next to your CRM, helpdesk and mailer, those people become a single contact graph the rest of the stack can join against.