Do you know any example of a successful Big Data project in Telecom?

Yes. I have led a project of development of national telco database of residential users, and further, based on that - BI, predictive analytics, sales development, etc..

Sorry, Telecom is not in my range.

Hi Jean,
I have dealt with below Big Data Projects (each of them with massive data processing,Complex Aggregation and Huge Storage):
- CDR Analytics
- Telecom Fraud Management System
- Telecom Revenue Assurance System

A classical Big Data project in telecom is to predict churn.

All IoT projects are essentially Big Data projects - so we had a few! Telecom operators are now actively pursuing those.