According to the CISM Review Manual, the security architecture of an organization defines the security principles, standards, guidelines and procedures that support the information security strategy and align with the business objectives. When acquiring another company, the information security manager of the acquiring company should focus on ensuring that the security architecture of the acquired company is compatible with its own, or that any gaps or conflicts are identified and resolved.

References = CISM Review Manual, 27th Edition, Chapter 2, Section 2.1.2, page 751.