AWS Certified Developer Official Study Guide, Associate Exam

Associate (DVA-C01) Exam

Nick Alteen, Jennifer Fisher, Casey Gerena, Wes Gruver, Asim Jalis, Heiwad Osman, Marife Pagan, Santosh Patlolla, Michael Roth

• Publisher: Sybex
• Year: 2019
• ISBN:
  9781119508205
• Edition: 1
• Topic: Computer Science
• Subtopic: Certification Guides in Computer Science
• Index: Computer Science

Foreword by Werner Vogels,
Vice President and Corporate Technology Officer, Amazon
The AWS exam has been updated. Your study guide should be, too.

The AWS Certified Developer Official Study Guide – Associate Exam is your ultimate preparation resource for the latest exam! Covering all exam objectives, this invaluable resource puts a team of AWS experts at your side with expert guidance, clear explanations, and the wisdom of experience with AWS best practices. You'll master core services and basic architecture, and equip yourself to develop, deploy, and debug cloud-based applications using AWS.

The AWS Developer certification is earned by those who demonstrate the technical knowledge and skill associated with best practices for building secure, reliable cloud-based applications using AWS technology. This book is your official exam prep companion, providing everything you need to know to pass with flying colors.

• Study the AWS Certified Developer Exam objectives
• Gain expert insight on core AWS services and best practices
• Test your understanding of key concepts with challenging chapter questions
• Access online study tools including electronic flashcards, a searchable glossary, practice exams, and more

Cloud computing offers businesses the opportunity to replace up-front capital infrastructure expenses with low, variable costs that scale as they grow. This customized responsiveness has negated the need for far-future infrastructure planning, putting thousands of servers at their disposal as needed—and businesses have responded, propelling AWS to the number-one spot among cloud service providers. Now these businesses need qualified AWS developers, and the AWS certification validates the exact skills and knowledge they're looking for. When you're ready to get serious about your cloud credentials, the AWS Certified Developer Official Study Guide – Associate Exam is the resource you need to pass the exam with flying colors. NOTE: As of October 7, 2019, the accompanying code for hands-on exercises in the book is available for downloading from the secure Resources area in the online test bank. You'll find code for Chapters 1, 2, 11, and 12.

Chapter 1
Introduction to AWS Cloud API

THE AWS CERTIFIED DEVELOPER – ASSOCIATE EXAM TOPICS COVERED IN THIS CHAPTER MAY INCLUDE, BUT ARE NOT LIMITED TO, THE FOLLOWING:

• Domain 2: Security
• 
  2.1 Make authenticated calls to AWS services.
• Domain 3: Development with AWS Services
• 
  3.4 Write code that interacts with AWS services by using APIs, SDKs, and AWS CLI.

Introduction to AWS

The AWS Cloud provides infrastructure services, such as compute, storage, networking, and databases, and a broad set of platform capabilities such as mobile services, analytics, and machine learning (ML). These services are available on demand, through the internet, and with pay-as-you-go pricing.

Think of AWS as a programmable data center. Rather than making a phone call or sending email to provision servers or other resources, you can manage all of your resources programmatically, via application programming interfaces (APIs). For example, you can provision virtual servers on demand in minutes and pay only for the compute capacity you use. The same is true for de-provisioning those servers; make a single API call to stop paying for resources that you no longer need. AWS operates many data centers worldwide, so you are not limited to a single data center.

In this chapter, you are introduced to AWS and shown how to make your first API calls. The AWS infrastructure behind the API calls follows. Afterward, you will learn how to manage the API credentials and permissions that you need to make API calls.

Getting Started with an AWS Account

The AWS Certified Developer – Associate is designed for developers who have hands-on experience working with AWS services. To help you prepare, this book has recommended exercises at the end of each chapter.

To work with AWS, you’ll need an account. While you must provide contact and payment information to sign up for an account, you can test many of these services through the AWS Free Tier. The AWS Free Tier limits allow you to become familiar with the APIs for the included services without incurring charges.

The AWS Free Tier automatically provides usage alerts to help you stay in control of usage and identify possible charges. You can define additional alerts with AWS Budgets. To best take advantage of the AWS Free Tier and reduce costs, take some time to review the AWS Free Tier limits, and make sure to shut down or delete resources when you are done using them.

To create an account, sign up at https://aws.amazon.com/free.

AWS Management Console

After you have created an account, you will be prompted to sign in to the AWS Management Console. As part of the sign-up process, you define an email address and password to sign in to the console as the root user for the account.

The console is a web interface where you can create, configure, and monitor AWS resources in your account. You can quickly identify the AWS services that are available to you and explore the functionality of those services. Links are also provided to learning materials to help you get started.

Sign in to the console, as shown in Figure 1.1, at https://signin.aws.amazon.com/console.

Figure 1.1 AWS Management Console

Because all the functionality of AWS is exposed through APIs, AWS provides more than only the web interface for managing resources. For example, the console is also available as a mobile app for iOS and for Android.

After you become familiar with a service, you can manage AWS resources programmatically through either the AWS Command Line Interface (AWS CLI) or the AWS software development kits (AWS SDKs), as shown in Figure 1.2.

Fig...