In IDQ there are no prebuilt connectors available for Amazon DynamoDb as of now I believe but you can connect to Amazon Redshift database using PWX connectors version 10.X.X onwards. The alternate option is, try with the ODBC connection type. Connectivity to 3rd party uncertified databases is supported if the ODBC driver complies with ODBC 2.0 or 3.0 standards. I would suggest you reach out to the (DynamoDB) database vendor to procure the ODBC driver and confirm if it is ODBC 2.0 or 3.0 compliant.
For IDQ, Redshift connector installs by default when Informatica 10.2 is installed.
Please check the below user guide for further details on Redshift connector(Chapter-2):
On the other side Informatica Cloud can be used for Amazon DynamoDB and Amazon Redshift both: You can refer to the below link for more details: