[simplotek]

> The post literally says that they could hit only 5% of the expected workload with their server less architecture, so IMO it is still quite negative.

Emphasis on "their server less architecture". Sometimes good tools are used poorly.

For example they describe a high throughout workload, and each workload spread through a bunch of lambdas that handled bite size bits of the workflow. Also, they managed the workflow with step functions. Just imagine the number of network calls involved to run a single job, let alone all the work pulling data to/from a data store like S3 into/out of a lambda. I'd guess the bulk of their wall time was IO to setup the computation.

Of course you get far better performance if you get rid of all these interfaces.