What is the purpose of ISRO?

ISRO develops and launches satellites which are used for various purposes such as navigation, communication, remote sensing, broadcasting, disaster management, telemedicine, weather forecasting etc. You can read about the Indian Space Research Organisation [ISRO Notes for UPSC] in the given link.

Further readings:

1. List of Indian Satellites – (1975-2021)
2. Satellite Launch Vehicle Program – PSLV & GSLV