Did all roles participate in setting up the infrastructure?

The participation of all roles in infrastructure setup depends on the organizational structure and processes within the company. Typically:

• Infrastructure engineers (DevOps, system administrators) are responsible for configuring and maintaining the infrastructure.
• Developers may participate in setting up the development and testing environments.
• QA specialists usually do not engage in infrastructure setup but can influence its requirements and test its functionality.

Thus, not all roles are directly involved in infrastructure setup, but interaction between roles is important for successful deployment and system support.