January 2026
Intermediate to advanced
254 pages
6h 48m
English
Content preview from AWS Certified Cloud Practitioner (CLF-C02) Study Guide
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Chapter 3. Cloud Computing Foundations
This chapter takes you through the fundamentals behind cloud computing: what it is, where it came from, how it works, and why it matters.
Along the way, we highlight why businesses of all sizes are leaning into the cloud. Some of the benefits include lower costs, faster innovation, global reach, and the ability to scale up or down as needed. These aren’t just buzzwords. They’re real advantages that help teams move quicker and respond to change without getting bogged down in infrastructure headaches.
Regarding the exam, you’ll be asked to distinguish between deployment models like public, private, and hybrid cloud, and to understand the differences between service models such as IaaS, PaaS, and SaaS. You’ll also see questions that assess your grasp of the core benefits of cloud computing—like high availability, pay-as-you-go pricing, and global scalability. By understanding both the “what” and the “why” of cloud computing, you’ll be better equipped to answer scenario-based questions that test real-world applications of these ideas.
Cloud Computing
The phrase “cloud computing” has been hyped, marketed, rebranded, and stretched to fit all kinds of products and services. Depending on who you ask, it might mean anything from streaming movies on Netflix to running entire companies’ infrastructure. This kind of broad usage can make the definition slippery. So, to ground the idea, let’s start with how AWS defines it:
“Cloud computing is the on-demand ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.