Asgardeo now directly supports your choice of SMS providers, providing another option in addition to doing so through integration with Choreo. This will allow you to plug in your favorite SMS providers as the SMS gateway with minimal configurations for Asgardeo. Asgardeo will utilize the plugged-in SMS provider for sending SMSs in all the scenarios including SMS OTP for login, recovery and for verification.
With this feature, you can plug in Twilio or Vonage as your SMS provider by just providing the proper service ID and the service secret you obtained from respective providers. Is it not Twilio or Vonage? Nothing to worry, by using the custom SMS provider option you can plug in any 3rd party SMS provider vendor by simply providing the endpoint URL and customizing the payload in a few clicks. You can find more information about this in the Asgardeo documentation linked below.
Documentation: https://wso2.com/asgardeo/docs/guides/authentication/mfa/add-smsotp-login/#configuring-sms-providers