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Design a Cloud File Storage Service is a hard system design interview question covering chunking, deduplication, CDN, sync protocol — the kind asked at FAANG (Facebook/Meta, Apple, Amazon, Netflix, Google) and AI-first companies like Anthropic, OpenAI, and Nvidia.
Design a cloud file storage and sync service. Users should be able to upload files, access them from multiple devices, and sync changes in real time.
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