To work with cloud-based telephony services, we need to register for an account with a telephony provider. There are a couple of popular cloud providers that you can find when you search on the Internet. For this chapter, we use Twilio (https://www.twilio.com/). Let's see how to register for an account.
In order to use cloud telephony APIs, we need to register for an account with Twilio so that we can get the AccountSID and AuthToken. We'd also need to rent numbers for the recipes in the SMS and voice sections. Let's learn how to work with Twilio APIs in this recipe.