What is Flagger

What is Flagger and how that is used in cloud ?

Flagger works are controller of the deployment workflow and helps automating the promotion of canary deployments. It utilizes the Istio’s and Prometheus metrics for analyzing application behaviors.
What is Istio ?
Istio is an open source service mesh that allows you to connect, monitor, secure your microservices deployment on premises or in cloud or in Kubernetes orchestration platforms.
What is Prometheus?Prometheus tracks events and helps as an alerting software. 

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