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After a mis‑configured security group in a classic network exposed a neighboring Alibaba Cloud user, developers highlighted the risks of shared internal networks and advocated moving to isolated Virtual Private Clouds, which offer customizable subnets, fine‑grained security, hybrid connectivity, and are now favored across major public‑cloud providers.
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The article reviews the evolution of the public cloud market, highlights Amazon AWS as the dominant player, discusses notable provider outages such as Nirvanix and AWS incidents, and offers guidance for enterprises on multi‑cloud strategies, data redundancy, and provider responsibilities.
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