twilio-communications

Basic pattern for sending SMS messages with Twilio. Handles the fundamentals: phone number formatting, message delivery, and delivery status callbacks. Key considerations: When to use : ['Sending notifications to users', 'Transactional messages (order confirmations, shipping)', 'Alerts and reminders'] Use Twilio Verify for phone number verification and 2FA. Handles code generation, delivery, rate limiting, and fraud prevention. Key benefits over DIY OTP: Google found SMS 2FA blocks "100% of automated bots, 96% of bulk phishing attacks, and 76% of targeted attacks." When to use : ['User phone number verification at signup', 'Two-factor authentication (2FA)', 'Password reset verification', 'High-value transaction confirmation'] Build Interactive Voice Response (IVR) systems using TwiML. TwiML (Twilio Markup Language) is XML that tells Twilio what to do when receiving calls. Core TwiML verbs: Key insight: Twilio makes HTTP request to your webhook, you return TwiML, Twilio executes it. Stateless, so use URL params or sessions.