An organisation may choose to have an audit of a data center carried out for various reasons:

• To ensure that the data center meets the organisation's requirements for security, availability, and reliability of the services it provides.
• To ensure that the data center complies with certain regulations or industry standards, such as the PCI DSS standard for the security of credit card data.

Finally, an audit of a data center can be carried out in different ways. Some organisations choose to do this internally, while others engage an external party to perform the audit.