The lack of due diligence for the recommended cloud vendor should be of greatest concern to the risk practitioner, because it exposes the organization to potential risks and issues related to the security, reliability, performance, and compliance of the cloud service provider. Due diligence is a process of conducting a thorough investigation and evaluation of a potential vendor or partner before entering into a contractual relationship. Due diligence helps to verify the vendor's credentials, capabilities, reputation, and track record, and to identify any red flags or gaps that may affect the quality or suitability of the service. Cloud computing is a model of delivering IT services over the internet, where the service provider owns and manages the IT infrastructure, platforms, or applications, and the customer pays only for the resources or functions they use.
Cloud computing can offer cost savings, scalability, and flexibility for the business, but it also introduces new risks and challenges, such as data privacy, security breaches, vendor lock-in, service outages, or regulatory compliance. Therefore, performing due diligence for the recommended cloud vendor is essential to ensure that the organization's expectations and requirements are met, and that the risks and issues are identified and addressed. The business introducing new SaaS solutions without IT approval, the maintenance of IT infrastructure being outsourced to an IaaS provider, and the architecture responsibilities not being clearly defined are all possible concerns for the risk practitioner, but they are not the greatest concern, as they can be mitigated or resolved with appropriate controls, policies, or agreements. References = Risk and Information Systems Control Study Manual, Chapter 5, Section 5.2.1, page 183

The primary concern when IT decides to develop an in-house replacement application for a critical business application is that the business process owner is not an active participant. The business process owner is the person who has the authority and responsibility for the business process that is supported by the application, and who understands the business requirements, objectives, and expectations of the application. The business process owner should be involved in all stages of the application development lifecycle, from planning, analysis, design, testing, implementation, to maintenance, to ensure that the application meets the business needs and delivers value. Without the active participation of the business process owner, the application development project may face risks such as scope creep, miscommunication, user dissatisfaction, poor quality, or failure.
References:
*ISACA, Auditing IT Risk Associated With Change Management and Application Development1
*ISACA, Auditing Applications, Part 12

Residual risk is the risk that remains after the implementation of controls. It is important for a risk practitioner to verify that the residual risk is within the acceptable levels defined by the enterprise's risk appetite and tolerance. This ensures that the controls are effective in reducing the risk exposure to an acceptable level and align with the enterprise's objectives and strategy. References = CRISC Review Manual 27th Edition, page
131. Most Asked CRISC Exam Questions and Answers.

The first thing that should be done when addressing security concerns associated with a new Internet of Things (IoT) solution is to develop new IoT risk scenarios. IoT is a network of physical devices, such as sensors, cameras, appliances, etc., that are connected to the internet and can collect, process, and exchange data. IoT introduces new security concerns, such as privacy, confidentiality, integrity, availability, and accountability of the data and devices, as well as new threats and vulnerabilities, such as unauthorized access, manipulation, or disruption of the data and devices. Developing new IoT risk scenarios is the first thing that should be done, because it helps to identify, analyze, and evaluate the potential risks that could affect the IoT solution's objectives or operations. Developing new IoT risk scenarios also helps to select the most appropriate and effective controls to minimize the risks, such as avoiding, reducing, transferring, or accepting the risks. The other options are not the first thing that should be done, although they may be part of or derived from the IoT risk scenarios. Implementing IoT device monitoring software, introducing controls to the new threat environment, and engaging external security reviews are all activities that can help to support or improve the security of the IoT solution, but they do not necessarily identify, analyze, or evaluate the risks that could affect the IoT solution. References = 1

RPOdefines themaximum tolerable data lossin case of a disruption - i.e., how much data the enterprise can afford to lose between the last backup and an incident.
ISACA's business continuity and CRISC guidance:
"The recovery point objective (RPO) is based on the amount of acceptable data loss determined by business requirements."
* A, C, Dare logistical concerns; onlyBdefines the RPO itself.
CRISC Reference:Domain 3 - Risk Response and Mitigation, Topic: Business Continuity Objectives (RTO
/RPO).