How can changes be implemented according to ITIL guidelines?

According to ITIL guidelines, changes can be implemented from an Incident or Problem, which highlights a fundamental aspect of IT Service Management. When an Incident is occurring, it may reveal underlying issues that need to be addressed through change, such as modifying systems or processes to prevent recurrence. Similarly, managing Problems, which are the root causes of one or more Incidents, often involves implementing changes to eliminate or reduce those problems. This approach ensures that changes are driven by actual needs and supported by the insights gained from service disruptions, thereby improving overall service quality.

Regarding the other options, while manual creation and Service Catalog routes may play roles in the change management process, they are not the exclusive methods of implementing changes. Manual processes might not always be reliable or consistent, and using the Service Catalog typically involves predefined offerings rather than addressing alterations initiated by specific incidents or problems. Therefore, focusing on changes derived from incidents or problems aligns with best practices to ensure that changes are purposeful and contextually relevant.