Containers redefined the role of an operating system (OS). With much of the heavy lifting moving to container runtimes, an OS has become a thin layer that provides access to physical resources. This shift has resulted in a new breed of operating systems called container-optimized OS (COS).
When compared to a traditional OS, COS is a lightweight OS with a much smaller footprint. It contains the most essential components that are required to run the container runtime. Choosing the right COS goes a long way in maintaining the CaaS deployment.
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