Anatomy is the cold-start block: end-to-end pipeline, OTT/VOD/Live/Linear/FAST vocabulary, SVOD/AVOD/TVOD business models, two-pipeline (live vs VOD) view, cost model, build-vs-buy, the reference architecture, and concurrency math. Anchor article uses the descriptive slug `how-an-ott-platform-works` to avoid cannibalising the existing `/blog/article/ott-platform-development-guide` blog.