
Before You Build It: The AWS Primitive That Replaces the Custom Piece
A lab design review still had a cron server for a nightly job. Classic Lambda had already stopped at 900 seconds. Name the primitive, or name the stop-rule that keeps the box.
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A lab design review still had a cron server for a nightly job. Classic Lambda had already stopped at 900 seconds. Name the primitive, or name the stop-rule that keeps the box.

A lab query still returned a customer the source deleted. Zero-ETL can land DynamoDB and listed SaaS sources in S3 Tables. A self-managed database cannot. Firehose database CDC was removed on 24 September 2025.

A lab table landed twice: Zero-ETL and DMS on the same rows. Self-managed databases replicate only to Redshift. Firehose Direct PUT into Iceberg is capped at 5 MiB/s in three regions, and database CDC was removed on 24 September 2025.

After the April 2026 S3 default that blocks SSE-C on new buckets (and on existing buckets in accounts with zero SSE-C objects), a SaaS media platform (~2.4 PB, 418 buckets) found 11 legacy upload paths still sending customer-key headers — all failing 403 until migrated to SSE-KMS.