Databricks Asset Bundles (DABs) are an infrastructure-as-code framework that enables developers to programmatically define, deploy, and manage Databricks resources—including jobs, notebooks, pipelines, clusters, and Unity Catalog objects—using declarative YAML configuration. Introduced as Databricks' native CI/CD solution, bundles facilitate software engineering best practices such as source control, code review, automated testing, and multi-environment deployments (dev → staging → production). Unlike general-purpose IaC tools like Terraform, DABs are purpose-built for the Databricks platform, offering streamlined workflows, template-driven project initialization, and tight integration with the Databricks CLI and VS Code extension. A key mental model: bundles treat your entire Databricks project—code, configuration, and dependencies—as a single deployable unit, ensuring consistency and reproducibility across environments.