Case Study: Kleinanzeigen builds a cloud-native data platform with Astro from Astronomer

Kleinanzeigen migrates 2 PB and 600+ tables in 6 months with Astronomer

Kleinanzeigen, Germany's largest online classifieds platform, faced the challenge of building a modern data platform from the ground up. The lean data engineering team needed to simultaneously stand up a new stack while meeting fast-moving business demands, requiring a foundational rebuild on a tight timeline. They turned to vendor Astronomer, Inc. to help power their new orchestration layer.

Astronomer provided its Astro platform to serve as the core orchestration solution. The team used Astro to refactor over 100 complex transformation DAGs and migrate more than 600 production tables, managing over 2 PB of data, all within six months without interrupting operations. The solution embedded standards and governance into the platform's DNA, improved the developer experience, and provided critical cost visibility. This allowed Kleinanzeigen's engineers to stop firefighting infrastructure and focus on delivering the data products their business depends on.

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