Just as a hand in the air...Be careful about what you're comparing here. # of API calls over a period of time is...largely irrelevant in the face of QPS. I can happily write a DDOS script that massively bombards a service, but if that halts my QPS then it doesn't matter. So sure, trillions of API calls were made (still impressive in the scope of the overall network of services, I'm not downplaying that), but ultimately, for DynamoDB and Spanner, it's the QPS that mattered to us in terms of comparisons of DB scaling and performance.