Sixteen weeks of study reach their cap. Yesterday's synthesis taught: don't fragment. Code's journey from commit to production is one thread, not silos. Domain 1 (SDLC, 22%) and Domain 2 (IaC + config, 17%) together are 39% of the exam — largest. Split in the blueprint but inseparable in practice. Pipeline deploys infrastructure; infrastructure defines pipeline; configuration flows between. Today we rethread as "code → production" single flow, with history, theory, and real-world failure lessons woven through each joint.