The CIO is the chief information officer of an enterprise, who oversees and optimizes the use of information technology (IT) to achieve the business objectives and strategy. One of the primary responsibilities of the CIO is to ensure that IT architecture requirements are considered when an enterprise plans to replace its enterprise resource applications (ERAs). ERAs are integrated software systems that support various business functions, such as finance, accounting, human resources, supply chain, etc. IT architecture requirements are the specifications and standards that define how the IT systems and platforms should be designed, developed, deployed, and maintained to support the ERAs and their users. IT architecture requirements include aspects such as performance, scalability, security, reliability, interoperability, usability, etc. The CIO should ensure that IT architecture requirements are considered when an enterprise plans to replace its ERAs, because they can affect the quality, efficiency, and effectiveness of the ERAs and their alignment with the business needs and goals. The CIO should also ensure that the IT architecture requirements are consistent with the enterprise’s IT strategy and vision, and that they comply with the relevant policies, regulations, and best practices.