What Virtualization Actually Is | Virtualization Fundamentals Part 1

Before you can secure, troubleshoot, or build anything in a modern data center, you need to understand the trick that runs almost all of it. Virtualization takes one physical server and turns it into many independent machines, and once you see how that works, a lot of IT and security suddenly makes more sense. In this first lesson we start with the core idea of abstraction, meet the hypervisor, and look at why companies were wasting roughly 90 percent of their server capacity before virtualization came along. From there we walk through the main types of virtualization, the big shift where servers stop being boxes and start being files, and the honest trade-offs: the benefits everyone talks about and the hidden costs people tend to skip over. In this lesson: What virtualization is and why abstraction is the core idea What a hypervisor does and how it hands out CPU, memory, and storage How idle hardware and server sprawl drove the move to virtualization Server, desktop, storage, network, and application virtualization Why a VM being "just a file" changes everything Benefits like consolidation and isolation versus costs like overhead and noisy neighbors Chapters: 0:00 Intro 0:42 What We'll Cover 1:04 The Core Idea: Abstraction and the Hypervisor 3:47 Solving the Hardware Problem: Inefficiency and Sprawl 5:52 Types of Virtualization 6:52 Servers Become Files: A Paradigm Shift 8:11 Benefits and Hidden Costs 9:39 Virtualization in Daily Life 10:49 Final Thought: When Hardware Is an Illusion This is part 1 of 16 in the Virtualization Fundamentals series. Watch the full series in order to go from the core idea all the way to clustering, backup, and recovery. Cybersecurity Masterclass by Joshua Moses | CyberTrace Foundation. #Course Lab Guide: https://github.com/joshuanmoses/Cyber...