While conducting a BIA for a proposed acquisition, the IT integration team found that both companies outsource CRM services to competing and incompatible third-party cloud services. The decision has…

Data remnants are residual pieces of sensitive customer data that remain on cloud provider storage infrastructure after the migration is complete; without verified data destruction or sanitization, the provider or future tenants could potentially access that data, creating a significant confidentiality risk.

Data sovereignty concerns apply primarily to cross-border data storage restrictions and are less critical when an organization is bringing data in-house within the same jurisdiction.

Compatible services is a technical integration concern for the IT migration team and does not represent a security risk that falls within the CISO's primary responsibility.

Storage encryption ensures that CRM data is protected at rest in the new in-house environment, so that even if physical or logical storage controls are bypassed, the data remains unreadable to unauthorized parties.

Data migration is a logistics and process concern for the IT team; the CISO's security focus centers on protecting data confidentiality and integrity before, during, and after migration rather than the migration process itself.

Chain of custody is a forensic evidence concept applicable to legal investigations and is not directly relevant to a CRM cloud-to-on-premises migration scenario.