Answer
- Packaged ERP
- Custom RPG and COBOL programs
- Java jobs
- ODBC and JDBC paths
- EDI
- Document management
- Barcode workflows
- Reports
- Schedulers
- Monitoring
- Security tools
- Backup software
- Printers
- Output queues
- License keys
Each dependency should be marked go, fix first, or defer. That removes buying friction because stakeholders can see which issues are proven, which need remediation, and which are not blockers.