Northern Trail Outfitters' security team has password policies they want enforced within Marketing Cloud.

Configure the business unit data retention setting to 12 months is the policy that the Marketing Cloud admin could configure in Setup. Business unit data retention setting is a setting that allows marketers to specify how long records in data extensions should be retained at the business unit level. By configuring the business unit data retention setting to 12 months, any inactive data that is older than 12 months will be automatically deleted from the data extensions in that business unit2