While reproducible build envs are a nice feature of using containers, they aren't the primary benefit.
The primary benefit is resource usage and orchestration.
Rather than duplicating entire aspects of an OS stack (which might ne considered wasteful) they allow for workloads to share aspects of the system they run on while maintaining a kind of logical isolation.
This allows for more densely packed workloads and more effective use of resources. This is a reason why the tech was developed and pushed by google and adopted by hyperscalers.
The primary benefit is resource usage and orchestration.
Rather than duplicating entire aspects of an OS stack (which might ne considered wasteful) they allow for workloads to share aspects of the system they run on while maintaining a kind of logical isolation.
This allows for more densely packed workloads and more effective use of resources. This is a reason why the tech was developed and pushed by google and adopted by hyperscalers.