Integrations with Apps that sync their activities/other data with Salesforce Tasks can consume a substantial amount of Salesforce Data Storage. A few examples of this are Pardot and Milestones PM+. Although this data is valuable to keep teams organized and focused, keeping this data in Salesforce without an archival process can be quite costly if old Completed Tasks are not deleted.
Automated emails may be sent from Salesforce when a customer case is submitted to acknowledge receipt of the case. This ensures that the customer is promptly responded to and high service standards are maintained. However, these automated emails consume a substantial amount of valuable Data Storage space which can be quite costly.