Book Image

AWS Cloud Computing Concepts and Tech Analogies

By : Ashish Prajapati, Juan Carlos Ruiz, Marco Tamassia
Book Image

AWS Cloud Computing Concepts and Tech Analogies

By: Ashish Prajapati, Juan Carlos Ruiz, Marco Tamassia

Overview of this book

This book makes understanding cloud computing easy by providing relatable examples that simplify the complex technology. By drawing parallels between cloud concepts and everyday scenarios, we will demystify cloud tech, and once you start to understand it, learning cloud computing will be more enjoyable. This book will help you learn about cloud computing in general and AWS specifically, as you follow the journey of TrendyCorp—a fictitious company gearing up to move from traditional IT to cloud computing. You’ll shape your understanding of the cloud through scenarios of interactions between TrendyCorp’s new hires, seasoned IT professionals, external consultants, and the board of directors engaged in modernizing their applications. These characters’ discussions and actions are focused on learning about cloud services by drawing comparisons between the technology and examples taken from real life. Through this book, you’ll realize that cloud computing concepts have more in common with your day-to-day scenarios and situations than you’ve ever imagined. This book offers a conversational and entertaining narrative that anyone working in IT and looking to understand how the cloud works will be able to follow. By the end of it, you’ll have developed a clear and simplified perspective of cloud technologies.
Table of Contents (22 chapters)
1
Part 1: Cloud Infrastructure and Core Services
7
Part 2: Platform Services
12
Part 3: Application Services

Scaling – several resources, several types

Alex begins to ask Harold and Berta his questions about scalability.

Alex: Isn’t scale-up and scale-out the same thing?

Harold: No. Let me first tell you about scalability, and then I will go into this difference. Scalability is the ability of a system to grow or shrink in a graceful manner. It allows it to function continuously when conditions such as traffic or volume change. Some examples could be how efficiently a system performs when user traffic is increased multifold, how well a database responds to a higher volume of queries, or even how an operating system performs on different types of hardware.

So, a scalable system must perform with the same stability and performance, even if the load on it increases. It can obviously take advantage of increased resources and offer better performance to customers.

And that means the performance of a system is directly related...