> All the layers/tools that are heaped upon one another just lead to complexity and dependence on paid services. I'm not advocating for reinventing the wheel, b

> All the layers/tools that are heaped upon one another just lead to complexity and dependence on paid services. I'm not advocating for reinventing the wheel, but rather that a bespoke solutions seem to be worth the cost. Which third party products do you use in your stack, then? Do you only use basic cloud building blocks (VMs, EBS, S3), or F/OSS components like Spark and Trino, or are higher level things like Tableau/Looker also part of the solution?