Below project demonstrates how to create a webhook by using spring boot which is being called from Twilio voice.

• Spring Boot app deployed in Heroku (Need a Heroku trial account to deploy this)
• A Twilio trial account (To get a phone number to verify integration & interaction)

• Create a Spring Boot project from https://start.spring.io/ or clone this GitHub project to start with the app.
• The app can be deployed to local and by using https://ngrok.com/ app can be exposed with public ip. However, I preferred to deploy to Heroku. Refer the below #1 link from References section to follow how to deploy.
• After deployment, Head to https://www.twilio.com with the login credentials to setup the phone number and configure the webhook url which Twilio programmable voice will make a call once receive a call (make sure the caller phone number is verified).
• Finally, make a call from the verified phone number to Twilio to see the magic.

• https://devcenter.heroku.com/articles/deploying-spring-boot-apps-to-heroku
• https://www.twilio.com/blog/coding-twilio-webhooks-in-java-with-spring-boot
• https://start.spring.io/