Send SMS Order Confirmations Using moltin and Twilio` is a tutorial on how to integrate Moltin's eCommerce API with Twilio's SMS API to send order confirmations via text message. The tutorial guides the reader through setting up an Express application, creating a Moltin customer with a phone number, and sending an SMS using Twilio. It also covers testing the integration using Ngrok and deploying the application to Heroku. The tutorial aims to reduce friction for customers by providing them with order numbers and details via text message without requiring login credentials.