Elisabeth Lichtie

One of Pulumi’s foundational benefits is that it allows you to manage your infrastructure as software with rich programming languages, robust testing, and CI/CD patterns that you’d use with your application code. This post will cover applying another classic software development technique to your infrastructure: feature flagging. You can use feature flags to control change rollout, reduce the risk of new releases, and speed up the development of your infrastructure, the same way you do with your applications.

The examples in this post range from simply creating a flag and using it in a Lambda function to fully integrating with LaunchDarkly to build a comprehensive flagging system for your infrastructure.

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The Pulumi Kubernetes Operator (PKO) enables you to manage Pulumi stacks as Kubernetes resources, but it doesn’t provide much guidance on change management. Kargo fills this gap by providing controlled, staged promotions with verification steps. Together, they let you keep your infrastructure defined in Pulumi while managing multi-environment rollouts in a systematic way.

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Architecture diagrams are one of the most tedious aspects of infrastructure management. Teams spend countless hours manually creating and updating visual representations of their systems, only to see them become outdated the moment infrastructure changes.

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AWS RDS supports blue/green deployments to support database maintenance. In a blue/green deployment, you have one production (blue) and one staging (green) database. You can safely make changes to the green instance without affecting production and promote it to be the main instance. When you enable blue/green updates, Pulumi will temporarily set up a blue/green deployment for the duration of the update to minimize downtime.

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