Abstract: Disclosed is an automated method and system for upgrading an automation function controlling an actuator via a PLC (programmable logic controller), including: providing a first container and a first sidecar container, whereby the first container contains a first automation function, the first automation function is controlling the actuator via the PLC, providing a second container and a second sidecar container, whereby the second container contains a second automation function, the second automation function is receiving data from the actuator but is not controlling the actuator, based on the received data pre-activation tests for the second automation function are executed in the second sidecar container by the second test unit, if the pre-activation tests are successfully finished, the time when the control of the actuator is handed over is determined, and the control of the actuator is handed over from the first automation function to the second automation function.

Abstract: A method and system for upgrading a service or microservice within a system where an updated version of the service is employed in the system without immediately allowing the service from assuming control of the final output of the system is provided.