WhatsApp Authentication means verifying a user's identity by sending a one-time code through WhatsApp rather than a traditional SMS channel. The process starts when a user enters their phone number, triggering an OTP sent via the WhatsApp Business API to their account. When WhatsApp Authentication works well, users verify themselves in under ten seconds without confusion. Anantya.ai m... https://anantya.ai/blog/whatsapp-authentication-guide/