We use ScyllaDB, a NoSQL database, as a distributed system to store customer data. My last project was in telecommunications, where we stored caller information like phone numbers, names, and scam tags for a scam call protection service. We handled insert, update, and other operations since the back-end AI system needed daily data inputs. We ran scripts to add the data to ScyllaDB across two AWS regions: US East and US West. One Scylla node handled requests, synchronizing data with its peer nodes. During the POC phase, we testedperformance, read/write operations, and latency and chose the right consistency levels for ourneeds. After that, we moved to production.