- a - Node.js and Express
- b - Deploying app to internet
- c - Saving data to MongoDB
- d - Validation and ESlint
- 3.1 - 3.6: Phonebook backend
- 3.7 - 3.8: Phonebook backend
- 3.9 - 3.11: Full Stack Phonebook. App deployed to Render at here.
- backend: Application given in the course material.