To import PST to a Google Workspace Mailbox involves transferring email data stored in PST (Personal Storage Table) files to Google's cloud-based productivity suite. This can be accomplished using Google's native migration tool, Google Workspace Migration for Microsoft Outlook (GWMMO), which allows direct import of PST files into Gmail, Google Contacts, and Google Calendar. Alternatively, organizations can utilize third-party migration tools or manual import methods, such as Google's Mail Fetcher tool or enabling IMAP access. Regardless of the method chosen, careful planning and execution are essential to ensure a seamless transition of email data, enhancing collaboration and productivity within the organization's Google Workspace environment.