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A few weeks ago, I began working on the PoC of a document indexing system for my client. I created a single S3 bucket in the eu-west-1 region and uploaded some files there for testing. Two days later, I checked my AWS billing page, primarily to make sure that what I was doing was well within the free-tier limits. Ap...

We were building a startup that measured marketing effectivness via a statistical attribution model. For this to work we had to collect a ton of online user behavior. Every click, every field input, every action. Data was stored in postgres and end users, via our UI, ran dashboards and reports that crunched the abov...