Tenant Isolation on AWS: Building a Multi-Tenant Workshop Platform That Doesn’t Leak

A missing tenant filter doesn't throw an error, it returns a 200 with too many rows. This is how to build a multi-tenant workshop management platform on AWS where the isolation boundary sits below your application code: STS session tags feeding IAM conditions, DynamoDB leading keys, scoped S3 prefixes, forced PostgreSQL row-level security, and a control plane that verifies each new tenant is fenced before anyone logs in.

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Zendesk Data Integration with AWS Glue Zero-ETL: The Delete Gap That Skews Your Numbers

AWS Glue zero-ETL replicates seven Zendesk entities, but only three of them ever remove a row. Here is how that gap quietly skews CSAT and knowledge base counts, plus the three IAM layers to wire, the two settings you cannot change after creation, and the CloudWatch metrics that make drift visible before someone spots it in a meeting.

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