The question asks where to find ownership and business criticality details for a server. That type of “who owns it, what does it support, and how important is it” data is maintained in a Configuration Management Database (CMDB) as part of configuration/asset management. Quentin Docter discusses asset management as lifecycle tracking and emphasizes accountability, including assigning responsibility and tracking who is associated with assets.

The All-in-One guide similarly describes asset management databases as tracking details such as “who has the asset,” “what type of asset,” and “where this asset is located,” which supports the idea that ownership and operational relevance are stored in such systems.

An SLA defines service expectations, an SOP defines procedures, and an EULA covers licensing—none are intended to be the authoritative inventory/ownership record for a specific server. Therefore, CMDB is the correct answer.