Application Deployment & Terraform Usage in Real-Time Projects

Hi Team,

I wanted to understand how application deployments and Terraform are used in real-time production environments.

1. How do teams typically deploy applications (VM-based, App Service, Kubernetes, etc.) in production?
2. What are the common Terraform commands used in day-to-day work, and how are they used in real workflows?
3. How do you structure Terraform modules for reusable infrastructure across environments?
4. How do you handle versioning, changes, and rollback in Terraform-managed infrastructure?
5. If someone wants to practice real-world deployment and Terraform usage, how can they simulate production-like setups?

Looking to learn practical implementation approaches followed in real projects.

Thanks in advance!