Where synchronous invocation is required, you should use an API Gateway, as AWS doesn’t implement a retry mechanism for you.

AWS Sydney region suffers API 'errors and latencies' As of Thursday afternoon, the affected services were Appstream 2.0, EC2, ELB, ElastiCache, RDS, Workspaces, and Lambda.

EDGE, a Digital Product Engineering Company, announced today that it has achieved expertise in AWS API Gateway Service ...