@33mhz Both DynamoDB and SQS work very well. I think you will be quite impressed with them if you haven't used them previously. The only catch is DynamoDB can get stupid expensive quickly and the pricing model is a total mess.
@sloanb I haven't used 'em before! I'll only have info in it temporarily, so should be minimal. I expect them to work very well with a lambda/ecs over there.