Connecting the application with the backend ( servers and database ) and making sure that all the desirable technologies are implemented in your application, which includes -
1. Custom API Development and Integration
2. User Authentication using Third Party Platforms ( Google, Facebook, Twitter, Github, etc. )
3. Payment Gateway Integration ( Stripe, PayPal, Razorpay, CC Avenue, etc.)
4. Connecting Application with Third-Part Backend Services ( Firebase, Supabase, Appwrite, etc. )