Architectural comparison: Glue = serverless Spark, Catalog, complex ETL. Lambda = event-driven, 15-min max, lightweight. Data Pipeline = templated, EC2/EMR-managed. When to use: Glue for data lake ETL; Lambda for triggers, small tasks; Data Pipeline for simple, cost-sensitive batch. Scalability: Glue via DPU; Lambda concurrency; Data Pipeline via instances. Cost: Lambda cheapest for small; Glue for Spark; Data Pipeline for simple batch....
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