Network node, monitoring node and methods performed therein

Embodiments herein relate to a method performed by a network node (10) for handling monitoring of applications and/or services in a communication network. The network node (10) obtains an indication associated with a monitoring session to monitor a metric of a service and/or application; and also obtains a location of deployment of the service and/or application. The network node identifies one or more ongoing monitoring sessions for monitoring one or more metrics based on the metric associated with the indication and the location of deployment of the application or service. The network node (10) then selects a monitoring process based on the identification; and triggers the selected monitoring process.