Twilio provides APIs and tools to add communications-related functionality (SMS/MMS, voice, video, e-mail, chat, 2FA, and others) into web and mobile applications.

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Read on and in just 10 minutes you will build an Android chat app using Xamarin and Twilio IP Messaging.

While Twilio is a REST API and you could make an HTTP request to it directly, you would need to store your Twilio credentials inside your app which poses a serious security issue.

You may be surprised but inviting people to weddings is expensive, as you need to send out both ‘Save the date’ cards and a subsequent invite with specifics about the wedding. It is also slow, as you have to send it all via post. It’s time intensive to chase people to see if they received the invite and if they’d like to come to a party with free food and drink – surely an automatic yes? Finally, invites are not environmentally friendly as they are one time use and easily lost or misplaced.

A system’s capacity for self-healing when a fault occurs is a key measure of achieving high availability. Recently, Twilio used Chaos Engineering to close the gap and eliminate the need for human intervention for common faults involving our core queueing-and-rate-limiting system, Ratequeue.

The Twilio C# helper libraries are largely static, so you don't have to use DI, but sometimes you might want to. For example, you might want to create a custom TwilioRestClient that uses the HttpClientFactory features of .NET Core 2.1. In this post, I describe how to create a custom ITwilioRestClient, register it with the ASP.NET Core DI container, and inject it into a web API controller, so you can use it to send an SMS.

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