Effective deployment management relies on continuous improvement. Regularly reviewing and updating deployment procedures ensures they remain aligned with changing business needs, new technologies, and lessons learned from previous deployments. This practice embodies the ITIL guiding principle of 'progress iteratively with feedback,' which is fundamental to maintaining the relevance and efficiency of any ITIL practice. It helps in identifying inefficiencies, mitigating new risks, and incorporating successful techniques into a standardized process, thereby enhancing the overall capability of the deployment management practice.

A. Avoid documentation to reduce complexity: Documentation is essential for consistency, training, and repeatability; avoiding it increases complexity and risk in the long run.

C. Only create deployment plans when issues arise: This is a reactive approach. Proactive and thorough planning is a core activity of deployment management to prevent issues.

D. Use different approaches for every service deployment: This prevents standardization and learning, leading to inefficiency, unpredictability, and higher rates of error.

1. AXELOS. (2020). ITIL® 4 Practitioner: Deployment Management. TSO (The Stationery Office). Section 4.2.4, "Practice success factors," emphasizes that the practice must "continually improve deployment models and approaches."

2. AXELOS. (2019). ITIL® 4 Foundation, ITIL 4 Edition. TSO (The Stationery Office). Section 4.3.4, "Progress iteratively with feedback," explains the importance of organizing work into smaller, manageable sections with feedback loops for continual improvement, a principle directly applicable to refining deployment procedures.