Garden vs ko

Garden is a DevOps automation tool for developing and testing Kubernetes applications. It creates production-like environments for development, testing, and CI on demand, then represents infrastructure, builds, services, and tests in a dependency-aware action graph. Graph-aware caching avoids rerunning unchanged images and tests. Garden Core uses YAML declarations to make workflows reproducible across developer machines and CI, and sync mode live-syncs changes to running deployments. Plugins cover Kubernetes, Helm, Terraform, Pulumi, and local scripts. Its Terraform provider validates and provisions infrastructure and exposes stack outputs to Garden actions; the Pulumi plugin is experimental and deploys stacks in dependency order. Garden Cloud's Remote Container Builder uses managed remote compute and shared Docker layer caches. Garden supports Linux, macOS, Windows, and self-hosted use. It requires Git 2.14 or newer, and local service builds need a local Kubernetes installation. The free tier has limits on build minutes, cache hits, and cache retention. Enterprise is a self-hosted Garden Cloud distribution installed into a customer's Kubernetes infrastructure.

ko is an open-source builder for container images of Go applications. It runs `go build` locally, so Docker does not need to be installed. The project positions it for a single Go application with few operating-system base-image dependencies, such as one without cgo or OS package requirements. Builds can target all platforms supported by the configured base image or selected platforms such as linux/amd64 and linux/arm64. For Kubernetes, `ko resolve` builds images for `ko://` references in YAML and replaces those references with image references; `ko apply` can apply the resolved configuration. ko reuses the normal Go build cache and avoids pushing image blobs already present in the remote registry. It generates and uploads SPDX-format SBOMs by default, with an option to disable this. Registry credentials can come from Docker configuration, with built-in environment credential support for Google, Amazon, Azure, and GitHub container registries. A Terraform provider supports Infrastructure-as-Code workflows. ko supports Go applications only and defaults to CGO_ENABLED=0. Windows container image support is experimental and requires a Windows base image.