In recent years, telecom has been shifting more towards product diversification. Instead of selling a simple SIM card, telcos are now expanding their sales to include wireless Internet, fiber optics, and cloud subscriptions among many other services. This trend generally stems from the intention of CSPs around the world to variegate their sources of revenue.
This diversity in products, however, raises a serious issue: How can we maintain a wide assortment of products while keeping the billing process smooth and hassle-free?



