Remediation planning is a key part of which process?

Capacity Management focuses on ensuring that IT infrastructure and services can meet current and future performance and demand requirements, not on planning for change failure recovery.

Change Management requires that a remediation plan - also called a back-out or rollback plan - be defined and approved as part of the change record before implementation begins, so that if the change fails or causes adverse effects, there is a tested and authorized procedure to restore the service to its prior stable state.

Financial Management for IT services covers budgeting, accounting, and charging for IT services and has no involvement in change rollback planning.

Availability Management is concerned with designing and maintaining IT services to meet agreed availability targets, not with defining procedures to reverse failed changes.