Your question is Backup vs Snapshot and VSS. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain the difference between a backup and a snapshot, and how Volume Shadow Copy Service (VSS) factors into this.
Be precise about data durability, recovery purpose, crash consistency, and application consistency. Relate the explanation to Windows Server and Veeam Backup & Replication, including what VSS does and does not provide.