This is a source-driven explainer of the Netflix tech stack and Netflix architecture. It summarizes what Netflix has publicly shared across client surfaces (React, Falcor or GraphQL), the edge (Zuul), the Netflix microservices architecture on AWS (Titus, Spinnaker), data and streaming platforms (EVCache, Cassandra, Mantis, Keystone), video pipeline and codecs (per-title and shot-based with VMAF, AV1), DRM with HTML5 EME, and the Netflix CDN, Open Connect. Every claim references an official source, and anything not disclosed is labeled “Not publicly documented,” with compact Netflix architecture diagram callouts for orientation. TL;DR Cloud and runtime - Netflix completed its AWS migration in…