https://slack.engineering/engineering-dive-into-slack-enterprise-key-management-1fce471b178c https://slack.engineering/engineering-dive-into-slack-enterp... Th

https://slack.engineering/engineering-dive-into-slack-enterprise-key-management-1fce471b178c https://slack.engineering/engineering-dive-into-slack-enterp... This shows the KMS key is in the customer's AWS account.