Telegram Cloud Chat vs Secret Chat compares two fundamentally different encryption architectures within the Telegram platform. Cloud Chat routes messages through Telegram servers using client-to-server TLS/MTProto encryption, enabling multi-device sync and server-side storage, while Secret Chat implements true end-to-end encryption via Diffie-Hellman key exchange with no server storage and device-only keys. Cloud Chat prioritizes accessibility and feature richness—supporting bots, groups, and channels—but grants Telegram theoretical access to plaintext; Secret Chat maximizes privacy with maximum security but sacrifices multi-device support and server-side features. Understanding these trade-offs helps users choose the right mode for their security and usability needs. Fork and customize this diagram on Diagrams.so to illustrate encryption architecture comparisons in security training, privacy documentation, or threat modeling exercises.