Container-based deployments make creating cloud portable applications extremely easy. An application can be written on normal build infrastructure, that in turn can be run on a EOS switch or any Linux device that runs docker run time engine. So the same applications that are run on a server for microservices can be run on a switch with Arista EOS. Since Arista extensible operating system is simply linux (AlmaLinux 9.7 at this time – 2026) we are able to integrate a container runtime engine into the operating system.

From the 4.29.2F release of EOS, proactive probing of servers is supported. Using this feature Arista switches can continuously probe configured servers to check their liveliness and use the information obtained from these probes while sending out requests to the servers.