Sisu is a business analytics software company based in San Francisco, California, founded in 2018 by Peter Bailis. The company offers a Decision Intelligence Engine that helps organizations leverage their cloud data to understand trends, diagnose issues, and take informed actions.

Sisu's core product is an augmented analytics platform designed for cloud-scale data. It employs machine learning and advanced statistical analysis to create diagnostic business metrics, enabling users to analyze changes in sales, customer acquisition, and other key performance indicators. The platform integrates with cloud services like AWS and provides API-based tools, SaaS delivery, and professional services, including implementation and training.

Sisu serves a variety of data-forward organizations, including notable clients such as Gusto, Samsung, and Wayfair. The company has secured significant funding, reflecting strong investor confidence in its technology and market potential.