Jenkins
You can integrate driftctl in Jenkins and within your GitOps workflow to get something like this:

In this kind of workflow if a new drift happens it will block your pipeline execution:

You can also setup a scheduled job to detect drifts as they happen, in the screenshot below it schedules a scan every hour:

Full example
Below you can find a full Jenkinsfile example with a complete GitOps workflow example and a driftctl scan.
# ====================
# Classic GitOps workflow
# ====================
pipeline {
	agent any
	environment {
		AWS_DEFAULT_REGION="us-east-1"
		AWS_ACCESS_KEY_ID=credentials("AWS_ACCESS_KEY_ID")
		AWS_SECRET_ACCESS_KEY=credentials("AWS_SECRET_ACCESS_KEY")
		PATH="$PATH:$HOME/dctlenv/bin/"
	}
	stages {
		stage("Init") {
			steps {
				sh "terraform init"
			}
		}
		stage('Validate') {
			failFast true
			parallel {
				stage("driftctl") {
					steps {
						sh "which dctlenv || git clone https://github.com/wbeuil/dctlenv"
						sh "dctlenv use latest"
						sh "driftctl scan"
					}
				}
				stage("terraform/fmt") {
					steps {
						sh "terraform fmt -check -diff"
					}
				}
				stage("terraform/validate") {
					steps {
						sh "terraform validate"
					}
				}
			}
		}
		stage("Plan") {
			steps {
				sh "terraform plan -out=plan.out"
			}
		}
		stage("Deploy") {
			steps {
				sh "terraform apply -input=false plan.out"
			}
		}
	}
}