Amazon DynamoDB now supports Federal Information Processing Standards (FIPS) 140-2 validated endpoints in the Canada (Central) Region, making it easier for you to use DynamoDB for regulated workloads. These endpoints terminate TLS sessions using a FIPS 140-2 validated cryptographic software module. For more information, see Regions and Endpoints.

from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/05/amazon-dynamodb-supports-fips-140-2-validated-endpoints-in-the-canada-central-region/