This book focuses more on practical aspects than it does on theoretical ones. In each chapter, you will see a perfect blend of theory and practice. This book will explain each and every necessary step and line of code with screen captures, code snippets, and other practical examples. By the end of the book, you will have a deployment-ready application written in Kotlin that uses a serverless approach. You will see how to use architectures and design patterns to write scalable code. You will also see how Firebase works with Kotlin.

You will need to have the following software installed on your local system:

1. Intellij IDEA CE IDE 2018.2
2. Gradle
3. Node.js and NPM
4. Docker
5. JDK1.8

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packt.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packt.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/-Hands-On-Serverless-with-Kotlin. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

A block of code is set as follows:

"x-amazon-apigateway-request-validators": {
"Validate body": {
"validateRequestParameters": false,
"validateRequestBody": true
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

"parameters":[
{
"name":"pollId",
"in":"path",
}

Any command-line input or output is written as follows:

$ mkdir css
$ cd css

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."