BENOCS uses ClickHouse to provide network traffic optimization and monitoring for telcos by leveraging fast indexing and fuzzy matching capabilities. The company's customers require fast access to specific time ranges while ignoring irrelevant data, which is achieved through ClickHouse's MergeTree table design and self-healing push architecture. Fuzzy matching, enabled by the _ASOF join feature in ClickHouse, simplifies queries by finding nearest matches instead of exact ones, allowing BENOCS to efficiently process vast amounts of data and build a stable analysis pipeline for its customers.