Kusion vs Pulumi

Kusion is a free, open-source platform orchestrator for internal developer platforms. Its AppConfiguration lets developers describe application workloads and resource dependencies without setting environment-specific values. The declarative model combines workload, accessory, pipeline, and dependency concepts. The documented process moves through Write, Generate, and Apply, with a three-way diff preview before changes are applied. Kusion currently applies operations to Kubernetes, Terraform, and on-premises infrastructure. Platform engineers can create reusable modules to standardize deployments and support developer self-service. A built-in delivery pipeline can be extended with customized plugin steps managed by platform owners. The project describes security and compliance support through base models, policy-as-code guardrails, and automatic injection of accessory secrets into workloads. External secret-store guides cover AWS, Alibaba Cloud, and Viettel Cloud. Kusion is a lightweight client-side solution with APIs for integration and automation. Its CLI installation methods cover macOS, Linux, and Windows. The project calls itself early and rapidly iterated; help and feedback are available through Slack or GitHub issues.

Pulumi helps engineers define and manage infrastructure as code using general-purpose languages. Supported languages include TypeScript, JavaScript, Python, Go,.NET, Java, YAML, and HCL, with providers such as AWS, Azure, Google Cloud, Kubernetes, Cloudflare, Datadog, and GitHub. Pulumi ESC centralizes secrets and configuration from major vaults and cloud providers and supports short-lived credentials through OIDC. Pulumi Neo can plan and execute infrastructure tasks, debug deployments, generate code, and provide cloud insights. Pulumi Deployments integrates with CI/CD services including Azure DevOps, Bitbucket, CircleCI, GitHub, GitLab, Google Cloud Build, and Jenkins. The CLI runs on Windows, macOS, and Linux and can use self-managed state backends such as S3, Azure Blob, GCS, or local storage. Listed capabilities include policy as code, drift detection, resource import, and self-hosted execution. The free plan includes one user and up to 500 workflow minutes. Essentials costs $40 a month, Pro $400 a month, and Enterprise $2,000 a month. Pulumi states that its platform is SOC 2 Type II certified.