Technical requirements
In order to leverage integration with another platform, you will need the login information for that other platform. Mailchimp will not be able to connect with another application without the credentials for your account with that other software, so keep in mind that you should have that other account and its credentials available to you before starting.
Additionally, it’s generally good practice to create a backup of the audience for which you plan on syncing any integration. This is just a precaution, but you can see the steps for exporting contacts in Chapter 3.