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

Step 1 – assess

The assessment phase is critical for defining your starting point, which, in turn, dictates everything from your first-mover application to the migration path.

To better organize our efforts, the assessment phase can be divided into the following steps:

  1. Creating an inventory/portfolio of your applications and grouping them based on similar properties
  2. Bringing your development teams up to speed
  3. Choosing your first-mover application

Cataloging existing applications

Creating an inventory of your existing applications/workloads and then cataloging them into similar groups is an important step, even if you already have a rough idea of which application you'll be migrating first. This is because your IT infrastructure is likely interconnected and dependent on different applications and workloads to fully function – choosing an application without fully understanding its impact on the rest of the infrastructure is not a smart...