SMS
SMS (Short Message Service) is a text messaging service component of most telephone, internet, and mobile device systems that allows the exchange of short text messages between fixed line or mobile phone devices. It enables developers to integrate text messaging capabilities into applications for notifications, alerts, authentication, and communication purposes. SMS is widely used for two-factor authentication (2FA), marketing campaigns, appointment reminders, and emergency alerts.
Developers should learn SMS integration when building applications that require reliable, near-universal communication with users, such as authentication systems (e.g., OTP verification), transactional notifications (e.g., order confirmations), or emergency alerts. It's particularly valuable in regions with limited internet access, as SMS works on basic mobile networks without data plans, ensuring broad reach and high delivery rates for critical messages.