Looker is a business intelligence and analytics platform powered by Google Analytics. It enables users to explore and analyze data across a business, creating a centralized data modeling layer that ensures reliable, governed data access. Looker supports a variety of data sources and integrates with SQL databases. The platform allows for the creation of visualizations and interactive dashboards, as well as the embedding of analytics into other applications. It aims to assist in making data-driven decisions by providing insights into the data.