tl;dr:"Getting this massive spend down to just $3.2 million has taken a ton of work. The ops team runs a vigilant cost-inspection program, with monthly reporting and tracking, and we’ve entered into long-term agreements on Reserved Instances and committed usage, as part of a Private Pricing Agreement. This is a highly-optimized budget.""This post will cover why I went through the effort of creating a Python SQL engine and how a simple query goes from a string to actually transforming data." Toby covers tokenizing, parsing, optimizing, planning and executing.