Encryption in Amazon Simple Workflow Service
Encryption at rest
Amazon SWF always encrypts your data at rest. Data in Amazon Simple Workflow Service is encrypted at rest using transparent server-side encryption. This helps reduce the operational burden and complexity involved in protecting sensitive data. With encryption at rest, you can build security-sensitive applications that meet encryption compliance and regulatory requirements
Encryption in transit
All data that passes between Amazon SWF and other services is encrypted using Transport Layer Security (TLS).