This blip is not on the current edition of the Radar. If it was on one of the last few editions it is likely that it is still relevant. If the blip is older it might no longer be relevant and our assessment might be different today. Unfortunately, we simply don't have the bandwidth to continuously review blips from previous editions of the RadarUnderstand more
Blue-green deployment is a pattern for performing software upgrades. By setting up the latest version of your application on an identical clone of your production application stack, traffic can be switched, near instantaneously, from the current production stack to the new one as soon as the test suite and the business determine it is appropriate. Though this is an old technique, infrastructure automation and resources in the cloud make it worth reconsidering.