Design develop build and deliver an end-to-end serverless architecture by leveraging Azure
services frameworks and tools. This book offers a holistic approach guiding you through the
design and development of a Twitter Bot application while leveraging Azure Functions.
Integrating Serverless Architecture begins with an overview of serverless computing and getting
started with Azure Functions. Here you will create a Twitter bot function which scans Twitter
for the latest tweets and makes use of dependency injection. Further you will learn about
Azure Cosmos DB where you will cover its change feed mechanism and the repository pattern. You
will create a Cosmos DB trigger-based tweet notifier function which will broadcast the latest
tweets to connected clients. You will explore the basics of Azure Service Bus and create a
tweet scheduler function which will prioritize different keywords for the Twitter bot
function. Along the way you will debug deliver and test the functions in the Azure
environment. This book shows you how to secure your Azure Function secrets with the help of
Azure Key Vault. To further your understanding of the technology you will learn logging and
exception handling in Azure Functions.Later in the book you will build a Twitter bot web
application by using ASP.NET Core and Materialize CSS which will interact with several
HTTP-based Azure Functions. The Twitter bot web application allows users to log in through the
Twitter Identity Provider subscribe to different keywords hashtags and browse the latest
tweets based on subscriptions. You will get started with SignalR Service and integrate it with
Azure Functions and web applications. Towards the end you will go through app service
authentication on Azure Functions and discover how to configure continuous integration and
delivery to Azure Functions. After reading this book you will be able to understand the steps
involved in design development and delivery of a workflow using Azure Functions. What You
Will Learn Design and develop a Twitter bot application using Azure Functions with Azure Web
App Service as the front end Leverage Azure Cosmos DB as data storage and trigger notifications
using its change feed mechanism Store and retrieve secrets from Azure Key Vault Integrate Azure
Functions with Azure SignalR Service to broadcast real-time messages Secure Azure Functions by
enabling Twitter identity authentication using built-in App Service authentication Build a
continuous integration and continuous delivery pipeline for Azure Functions using Visual Studio
Team Services (VSTS) Who This Book Is For Developers software engineers and architects who
design and manage infrastructures and build applications by leveraging Microsoft cloud
services.
