"Dagster Asset‑Based Orchestration: Building Maintainable Data Platforms" Are your data pipelines becoming unmanageable webs of fragile, time-based tasks? This book offers a foundational paradigm shift for data engineers, platform architects, and advanced practitioners. By moving away from legacy imperative workflows, you will learn to embrace Software-Defined Assets (SDAs) to architect resilient, state-based data platforms. Tailored for experienced professionals, this guide provides the deep technical insights required to design scalable systems that finally treat data products as first-class, observable citizens. Through comprehensive, in-depth chapters, you will master Dagster’s most powerful orchestration primitives. You will learn to decouple infrastructure from business logic using Pythonic resources and I/O managers, and seamlessly scale heavy workloads using complex partition mappings. The book thoroughly explores declarative automation to drive execution based on asset freshness, alongside strategies for seamlessly integrating external computation environments and modern tools like dbt via Dagster Pipes. Unlike introductory tutorials, this text prioritizes true software engineering rigor within the data domain. Assuming prior orchestration and Python experience, it dives deeply into robust CI/CD pipelines, first-class asset checks, and deterministic testing strategies. Ultimately, this book equips you with the architectural blueprints and observability techniques needed to confidently deploy, debug, and maintain enterprise-grade data platforms.