In one project we had testing setup which costs 600k USD allually. It was three times more expensive than production setup we had for product which was more tha

In one project we had testing setup which costs 600k USD allually. It was three times more expensive than production setup we had for product which was more than 3 year old. Nothing special, just mongo and Kafka with enormous size. If you run automation tests Manu times per day but do not clean anything - you'll get mongo with terabytes of test data. And then, on top there was elastic search which multiply bills.