| Aspect | Application Decommissioning | Application Support |
|---|
| Primary Focus | Retiring and phasing out applications | Maintaining and troubleshooting applications |
| Work Environment | Project-based, involving planning and migration | Ongoing operational support |
| Required Skills | Project management, migration, decommissioning processes | Troubleshooting, user support, system maintenance |
| Certifications | ITIL, project management certifications | ITIL, technical support certifications |
Application Decommissioning focuses on retiring outdated or unused applications through planning and migration, while Application Support involves ongoing maintenance and troubleshooting of active applications. Both roles require ITIL knowledge but differ in scope and objectives.