The business process owner is the person who is responsible for overseeing and managing the business processes and functions that are essential for the organization’s operations and objectives. The business process owner has the most direct and detailed knowledge of the inputs, outputs, dependencies, resources, and performance indicators of the business processes and functions. Therefore, the business process owner is the best person to calculate the recovery time and cost estimates when performing a business impact analysis (BIA), which is a process of identifying and quantifying the potential losses, damages, or consequences that could result from a disruption or an incident that affects the availability, integrity, or confidentiality of the information assets and systems that support the business processes and functions. The recovery time and cost estimates are the measures that indicate the time and money that are needed to resume and restore the normal business operations and functions after the disruption or incident. The recovery time and cost estimates can help to prioritize and protect the critical activities and resources, to allocate the appropriate budget and resources, to implement the necessary controls and measures, and to evaluate the effectiveness and efficiency of the business continuity and disaster recovery plans.

The business continuity coordinator, the senior management, and the information security manager are all important roles in the BIA process, but they are not the best ones to calculate the recovery time and cost estimates. The business continuity coordinator is the person who is responsible for coordinating and facilitating the BIA process, as well as the development, implementation, and maintenance of the business continuity and disaster recovery plans. The business continuity coordinator can help to define and communicate the scope, objectives, and methodology of the BIA, to collect and analyze the data and information from the business process owners and other stakeholders, to report and present the BIA results and recommendations, and to provide feedback and suggestions for improvement and optimization of the BIA and the plans. The senior management is the group of people who have the ultimate authority and accountability for the organization’s strategy, direction, and performance. The senior management can help to approve and support the BIA process and the plans, to provide the strategic guidance and vision for the business continuity and disaster recovery, to allocate the necessary budget and resources, to oversee and monitor the BIA and the plans, and to make the final decisions and approvals. The information security manager is the person who is responsible for ensuring the security of the information assets and systems that support the business processes and functions. The information security manager can help to identify and assess the information security risks and issues that could affect the BIA and the plans, to implement and manage the security controls and measures that are needed to protect and recover the information assets and systems, to coordinate and collaborate with the business process owners and other stakeholders on the security aspects of the BIA and the plans, and to provide the security expertise and advice. References = CISM Review Manual 15th Edition, pages 228-2291; CISM Practice Quiz, question 1722