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  Cloud Fundamentals: Understanding the Foundation of Modern Infrastructure 📅 Published: Feb 2026 ⏱️ Estimated Reading Time: 16 minutes 🏷️ Tags: Cloud Computing, IaaS, PaaS, SaaS, AWS, Azure, GCP Introduction: What is Cloud Computing? The Simple Explanation Cloud computing is the delivery of computing services over the internet. Instead of buying and maintaining your own physical servers, you rent computing power, storage, and applications from a provider like Amazon Web Services (AWS), Microsoft Azure, or Google Cloud. Think of it like electricity. Before the electrical grid, every factory had to generate its own power. They built power plants, maintained generators, and paid for capacity whether they used it or not. When the grid arrived, factories could plug in and pay only for what they used. Cloud computing is the same transformation for technology. Instead of buying servers, you rent them. Instead of predicting capacity years in advance, you scale up and down in minutes. In...