This article maps the Hotstar Tech Stack in detail: the end‑to‑end OTT architecture - client players (web/Android/iOS/TV) using ABR HLS/DASH with multi‑DRM; multi‑CDN delivery; an API gateway in front of Kubernetes microservices; Kafka + Flink streaming into an OLAP warehouse and feature store; plus the observability, CI/CD, cost, and security practices that keep streams stable at massive scale. You’ll learn which components matter, how they fit together, trade‑offs to watch, and a concise path to build a similar OTT platform with VdoCipher. TL;DR Clients: Web, Android, iOS/tvOS, and TV apps with ABR streaming and multi‑DRM (Widevine/FairPlay/PlayReady). Edge & Delivery: Multi‑CDN…