What should be established to promote effective team collaboration whilst maintaining security in a Shared VPC?

Establishing clear policies on resource sharing within a Shared VPC is essential for promoting effective team collaboration while maintaining security. Such policies define the roles and responsibilities regarding who can access what resources, which helps to ensure that only authorized users have permissions to specific assets. This structure minimizes risks and potential misconfigurations, fostering a secure environment where teams can collaborate effectively without overstepping boundaries.

Having clear policies ensures accountability and enables teams to understand the scope of their access, preventing unauthorized actions and data breaches. Proper documentation of these policies aids in onboarding new team members and ensures consistency in managing permissions across various teams. In the context of a Shared VPC, where resources are shared among multiple teams, clarity on how resources can be used and shared is vital for both security and operational efficiency.

Other options, such as completely separate networks for each team, could lead to inefficiencies and isolation that hinder collaboration. Single permissions for all users would create significant security risks by granting every user the same level of access, which is not advisable in a shared environment. Encouraging self-service for all network resources might lead to mismanagement or oversights regarding security practices without proper oversight and governance in place.