Experian Marketing Services processes large amounts of customer data and needed a scalable solution to store and query the data. They developed a custom ETL solution using HBase for storage and an extractor to optimize queries. The solution ingests data from multiple sources into HBase tables in near real-time, generates aggregate tables, and allows queries to retrieve results from optimized tables based on metadata. Testing showed the solution could ingest over 1 million records per minute into HBase and return most queries within seconds.