The text discusses Vantage's transition from Redshift and Postgres to ClickHouse Cloud, a cloud cost optimization platform. Brooke McKim, co-founder and CTO of Vantage, shared their experience of transitioning to ClickHouse, discussing the challenges with their previous architecture, the decision to switch to ClickHouse, and the benefits they've seen since making the move. Vantage initially started with Postgres, which seemed adequate at first but quickly encountered performance issues as they began to scale. They then switched to Redshift, but it presented its own set of challenges, including high cloud costs and limited user experience. The team eventually discovered ClickHouse Cloud, which offered a more cost-effective, high-performance solution that has enabled them to grow and improve their platform. With ClickHouse, Vantage no longer needed to delete and reinsert data for their nightly report generation, reducing operational overhead and cutting costs while maintaining high performance.