Book Image

AWS Certified Developer - Associate Guide

By : Vipul Tankariya, Bhavin Parmar
Book Image

AWS Certified Developer - Associate Guide

By: Vipul Tankariya, Bhavin Parmar

Overview of this book

AWS Certified Developer - Associate Guide starts with a quick introduction to AWS and the prerequisites to get you started. Then, this book gives you a fair understanding of core AWS services and basic architecture. Next, this book will describe about getting familiar with Identity and Access Management (IAM) along with Virtual private cloud (VPC). Moving ahead you will learn about Elastic Compute cloud (EC2) and handling application traffic with Elastic Load Balancing (ELB). Going ahead you we will talk about Monitoring with CloudWatch, Simple storage service (S3) and Glacier and CloudFront along with other AWS storage options. Next we will take you through AWS DynamoDB – A NoSQL Database Service, Amazon Simple Queue Service (SQS) and CloudFormation Overview. Finally, this book covers understanding Elastic Beanstalk and overview of AWS lambda. At the end of this book, we will cover enough topics, tips and tricks along with mock tests for you to be able to pass the AWS Certified Developer - Associate exam and develop as well as manage your applications on the AWS platform.
Table of Contents (29 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface
Index

Understanding virtualization


Virtualization is a process of virtually segregating physical hardware resources into a set of virtual resources that can independently work as a computing resource and provide customized and dedicated CPU, RAM, storage, and so on. Each server and its resources is created in an isolated environment. Each isolated environment is abstracted from the physical operating system and underlying hardware configuration. Such resources are called VMs or instances.

Virtualization is achieved using virtualization software that maintains the abstract and virtual layers on top of physical hardware. Let us understand these virtualization software and virtualization types in the following sections.

Virtualization types based on virtualization software

As shown in the following figure, virtualization software can be broadly categorized into two categories, class 1 and class 2:

Figure 2.6: Virtualization types based on virtualization software

  • Class 1 type: This is also known as the...