I'd argue that running at 100% of provisioned capacity is something that only makes sense for a very, very small subset of DynamoDB users. Actually I'd only do

I'd argue that running at 100% of provisioned capacity is something that only makes sense for a very, very small subset of DynamoDB users. Actually I'd only do it if my access patterns were really predictable and if it's fine if requests get throttled. The more common use case is that you over-provision your provisioned capacity to be able to handle some spikes in the number of accesses well. While there was already DynamoDB Autoscaling, I suggest everybody using it checks out DynamoDB OnDemand, as that might (depending on the access patterns) still save a lot over DynamoDB Autoscaling and is overall way less hazzle, because you simply don't have to care about scaling the provisioned capacity at all anymore.