Azure blue green deployment

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http://work.haufegroup.io/Blue-Green-Deployment-on-Azure/

https://azure.microsoft.com/en-us/blog/blue-green-deployments-using-azure-traffic-manager/

https://azure.microsoft.com/en-us/resources/templates/301-jenkins-vmss-blue-green/

https://msftstack.wordpress.com/2017/02/24/vip-swap-blue-green-deployment-in-azure-resource-manager/

https://github.com/Azure/azure-quickstart-templates/tree/master/301-jenkins-vmss-blue-green

https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/virtual-machine-scale-sets/virtual-machine-scale-sets-faq.md

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