During the Critical Success Factor (CSF) life cycle action plan review, the task associated with realizing benefits is "Monitoring performance against objectives." This task ensures that the expected benefits of the IT initiatives are being achieved by continuously assessing performance and making necessary adjustments.

Monitoring performance against objectives involves tracking the progress of IT initiatives to ensure they meet their goals and deliver the expected benefits. This includes using performance metrics, key performance indicators (KPIs), and regular reviews to evaluate whether the initiatives are on track and delivering value.

COBIT 2019 Framework References:

COBIT 2019 Implementation Guide, Chapter 7:Emphasizes the importance of monitoring and measuring performance to ensure that benefits are realized and objectives are met.

COBIT 2019 Design Guide, Chapter 4:Highlights the role of performance monitoring in managing and achieving IT governance and management objectives.

By monitoring performance against objectives, enterprises can ensure that their IT initiatives are successful and provide the intended benefits, making it a critical task in the CSF life cycle action plan review.