Book Image

The Definitive Guide to Modernizing Applications on Google Cloud

By : Steve (Satish) Sangapu, Dheeraj Panyam, Jason Marston
Book Image

The Definitive Guide to Modernizing Applications on Google Cloud

By: Steve (Satish) Sangapu, Dheeraj Panyam, Jason Marston

Overview of this book

Legacy applications, which comprise 75–80% of all enterprise applications, often end up being stuck in data centers. Modernizing these applications to make them cloud-native enables them to scale in a cloud environment without taking months or years to start seeing the benefits. This book will help software developers and solutions architects to modernize their applications on Google Cloud and transform them into cloud-native applications. This book helps you to build on your existing knowledge of enterprise application development and takes you on a journey through the six Rs: rehosting, replatforming, rearchitecting, repurchasing, retiring, and retaining. You'll learn how to modernize a legacy enterprise application on Google Cloud and build on existing assets and skills effectively. Taking an iterative and incremental approach to modernization, the book introduces the main services in Google Cloud in an easy-to-understand way that can be applied immediately to an application. By the end of this Google Cloud book, you'll have learned how to modernize a legacy enterprise application by exploring various interim architectures and tooling to develop a cloud-native microservices-based application.
Table of Contents (26 chapters)
1
Section 1: Cloud-Native Application Development and App Modernization in Google Cloud
5
Section 2: Selecting the Right Google Cloud Services
10
Section 3: Rehosting and Replatforming the Application
17
Section 4: Refactoring the Application on Cloud-Native/PaaS and Serverless in Google Cloud

The principles and concepts of cloud security

You may be tempted to skip ahead to the actual Google Cloud services and concepts, but we strongly recommend that you familiarize yourself with these principles first. Like the design patterns we learned about previously, these principles and policies are meant to prevent security vulnerabilities and guide your development around security best practices. It's also a relatively short section.

There are numerous design principles and methodologies that help secure an app. However, not all of them are equally relevant to cloud-native app development. In this chapter, we are going to cover three major principles listed below that cover most of what makes up cloud security.

Economy of Mechanism

This principle states that your application (microservices) needs to be small and simple enough that in case there is a security vulnerability or attack, it can be quickly identified and repaired.

To some extent, the Economy of Mechanism...