Docker
Docker packages an application and its userspace dependencies into a portable image that runs identically across developer laptops, CI runners, and production hosts. The value is reproducibility — `docker build` produces the same artefact every time, so the bug a developer sees locally is the bug an engineer can attach a debugger to in staging.
Concepts that travel with this one.
Architecture rarely lives in isolation — these are the terms that come up in the same conversation.
Kubernetes
Kubernetes is an open-source container orchestration platform that schedules, scales, and self-heals workloads across a fleet of nodes. TantraDev runs Kubernetes (EKS, AKS, GKE) where workload heterogeneity or multi-tenancy justifies the operational tax — and explicitly recommends managed alternatives (ECS Fargate, Cloud Run) where they don't. Picking K8s for a five-service app is usually the wrong call.
CI/CD
Continuous Integration / Continuous Delivery is the discipline of automatically building, testing, and shipping every code change. CI catches regressions before they merge; CD removes the manual step between merge and production. TantraDev considers a pipeline 'real' only when a clean commit can reach production without a human gate other than a deployment-window check.
Building a system where Docker is the load-bearing decision?
30 minutes on the phone, one page in your inbox — what to build, what to skip, what it will cost. You keep the audit even if we are not the right fit.