We contribute to open source with our order management and business process automation core. Each OSS/BSS component is replaceable. Our customers do not have a vendor lock-in. More than 50% of Hydra Billing is accompanied by a source code. We use open-source solutions wherever possible. We have full and documented API. Hydra's database structure is open and documented. Since 2007, we have been specializing in business process automation of ISPs and digital service providers ranging from...