Buildkite Pty. Ltd. is a software publisher specializing in continuous integration and continuous delivery (CI/CD) tooling, best known for its hybrid approach that combines a hosted pipeline orchestration service with self-hosted build execution. Its product range centers on enabling development teams to automate the building, testing, and deployment of software while retaining full control over their own infrastructure and source code. The company's flagship component, the Buildkite Agent, is an open-source toolkit written in Go that securely runs build jobs on any device or network, including cloud instances, on-premises servers, containers, and even specialized hardware such as macOS machines or embedded devices. This design allows organizations to scale build capacity independently, meet compliance and security requirements, and avoid the constraints of fully hosted CI runners. Complementing the agent, the Buildkite CLI provides a command line interface for interacting with the Buildkite platform, letting engineers trigger builds, inspect pipeline status, manage agents, and integrate Buildkite operations into scripts and automation workflows without leaving the terminal. Together, these tools address the needs of software engineering teams practicing modern DevOps, from small startups to large enterprises, supporting use cases such as running parallel test suites, orchestrating multi-step deployment pipelines, and executing workloads behind corporate firewalls. Typical categories covered by the publisher's portfolio include build automation, pipeline orchestration, developer tooling, and infrastructure automation. By offering its agent as open source while pairing it with a managed control plane accessible through its website and API, Buildkite Pty. Ltd. positions itself as a flexible alternative to traditional CI platforms, appealing to teams that require scalability, transparency, and ownership over where and how their code is built and tested.