Free Course — No signup required

Learn Communications API
in 5 Days

Send SMS programmatically. Add voice calling. Build WhatsApp bots. Verify phone numbers.

5 lessons
Self-paced
~60 min/day
Free forever
No account needed
Start Day 1 — Free → See what's covered
What you'll learn

Twilio in 5 Days

Free 5-day Twilio course. SMS, voice calls, WhatsApp messaging, phone number verification, and video with Twilio.

  • Send and receive SMS messages with the Twilio API
  • Build a voice call flow with TwiML
  • Send WhatsApp messages and build simple chatbots
  • Add phone number verification to your app
  • Build a video call feature with Twilio Video
  • Handle inbound calls and messages with webhooks
180+
countries
Programmable
voice
5
lessons
$0
cost
5-Day Curriculum

Every lesson has a real exercise.
No theory without practice.

01
SMS with Twilio
Account setup, send SMS, receive SMS, reply bots
SMSwebhooksreply
→
02
Voice & TwiML
Make calls, TwiML verbs, IVR menus, recording calls
TwiMLIVRrecording
→
03
WhatsApp API
WhatsApp sandbox, templates, inbound messages, chatbot
WhatsApptemplateschatbot
→
04
Phone Verification
Twilio Verify, OTP flow, rate limiting, fraud prevention
VerifyOTPfraud
→
05
Twilio Video
Room types, JS SDK, token generation, recording
Videoroomstokens
→
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Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems at scale. This course is practical first — every lesson has code you can run and an exercise you can finish in under an hour.

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