Book Image

AWS Certified DevOps Engineer - Professional Certification and Beyond

By : Adam Book
Book Image

AWS Certified DevOps Engineer - Professional Certification and Beyond

By: Adam Book

Overview of this book

The AWS Certified DevOps Engineer certification is one of the highest AWS credentials, vastly recognized in cloud computing or software development industries. This book is an extensive guide to helping you strengthen your DevOps skills as you work with your AWS workloads on a day-to-day basis. You'll begin by learning how to create and deploy a workload using the AWS code suite of tools, and then move on to adding monitoring and fault tolerance to your workload. You'll explore enterprise scenarios that'll help you to understand various AWS tools and services. This book is packed with detailed explanations of essential concepts to help you get to grips with the domains needed to pass the DevOps professional exam. As you advance, you'll delve into AWS with the help of hands-on examples and practice questions to gain a holistic understanding of the services covered in the AWS DevOps professional exam. Throughout the book, you'll find real-world scenarios that you can easily incorporate in your daily activities when working with AWS, making you a valuable asset for any organization. By the end of this AWS certification book, you'll have gained the knowledge needed to pass the AWS Certified DevOps Engineer exam, and be able to implement different techniques for delivering each service in real-world scenarios.
Table of Contents (31 chapters)
Section 1: Establishing the Fundamentals
Section 2: Developing, Deploying, and Using Infrastructure as Code
Section 3: Monitoring and Logging Your Environment and Workloads
Section 4: Enabling Highly Available Workloads, Fault Tolerance, and Implementing Standards and Policies
Section 5: Exam Tips and Tricks

Lambda functions

The code you write becomes the function that runs without the need for provisioning or managing any servers. The function itself is the resource and can take in events that have been passed to it, either by you or other AWS services.

You can use a few different languages that are supported to create your Lambda functions. These include Python, Node.js, Ruby, Java, Go, and .NET. You can even create custom runtimes by using containers.

The basic concepts of Lambda

When you start a Lambda function, that process is called invoking the function. Lambda functions process events. Events are sent to your functions in a few different ways: you can manually invoke the function, such as with a test event, or you can configure an AWS resource or service to invoke it and start the process.

Since we're talking about Lambda functions, there are a few key concepts that need to be understood.


A function is the code where you process your events...