Which DynamoDB limits can be raised by contacting AWS support?

C&E

CE

C. The number of tables per account
E. The number of provisioned throughput units per account

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html

C, E

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html

For any AWS account, there is an initial limit of 256 tables per region.

You can request an increase on this limit. For more information, go to http://aws.amazon.com/support.

An AWS account places some initial maximum limits on the throughput you can provision:

US East (N. Virginia) Region:
Per table – 40,000 read capacity units and 40,000 write capacity units
Per account – 80,000 read capacity units and 80,000 write capacity units
All Other Regions:
Per table – 10,000 read capacity units and 10,000 write capacity units
Per account – 20,000 read capacity units and 20,000 write capacity units
The provisioned throughput limit includes the sum of the capacity of the table together with the capacity of all of its global secondary indexes.

You can request an increase on any of these limits. For more information, see http://aws.amazon.com/support.