Both Flow and PowerApps are great tools that can be in the hands of business and power users to accelerate the building of automated workflows and business apps across on-premise and the cloud services. It’s easy to see how there could be many such Flows and Apps built, deployed and running within your tenant. It’s a best practice for the IT administrators to devise a monitoring strategy in place that could proactively keep a watch on these Flows, Apps and other related resources and alert and perform remediation actions as necessary.