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README.md

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 ### Table of content
 
 1. [Why did the concept of virtualization appear in 1960?](#desc0)
+2. [Virtualization](#desc1)
 
 
 <a name="desc0"></a>
 ### Why did the concept of virtualization appear in 1960?
 
-
 <img alt="1960" src="assets/1.png" />
+
+
+<a name="desc1"></a>
+### Virtualization
+
+**```There is a lot of talk about virtualization, but here we will talk about hardware virtualization.```**
+
+- Hardware Virtualization: This involves creating virtual machines (VMs) that emulate a complete hardware environment, including:
+  - CPU.
+  - memory.
+  - storage.
+  - network components.
+- We can do this by adding another layer, which is called a ```hypervisor```.
+  - Hypervisor: ```software``` or ```firmware``` that creates and manages VMs. It allows multiple operating systems to share a single hardware host.
+  - Types of Hypervisors:
+    - Type 1 (Bare Metal): runs directly on the host's hardware to control the hardware and to manage guest operating systems.
+    - Type 2 (Hosted): runs on a standard operating system, just like other computer programs. This type is usually used for testing and development.
+
+- Check out the figure for more explanation.
+
+<img alt="Hypervisor" src="assets/2.png" />