Yahoo! is a web services provider headquartered in Sunnyvale, California, and is one of the pioneers of the early Internet era. It provides a Web portal, search engine Yahoo! Search, and related services, including Yahoo! Directory, Yahoo! Mail, Yahoo! News, Yahoo! Finance, Yahoo! Groups, Yahoo! Answers, advertising, online mapping, video sharing, fantasy sports, and its social media website. The Strategic Data Services (SDS) group built the first petabyte data warehouse to consolidate analytics data from all Yahoo! properties business intelligence and data mining. 

Yahoo! Contracted with Equiom to design, build, own and operate several components of the Yahoo Strategic Data Service (SDS) systems, including the components of the data warehouse, the analytics component, and the business intelligence components. The engagement spanned four stages:  Project inception where objectives defined and milestones where set; Project Elaboration, where we worked with the Yahoo! team to define the details of the architecture; Project Construction where we developed initial operational capabilities; and finally Project Transition where we transferred the product ownership back to the Yahoo! team after  release for ongoing operations. It became the world’s largest data warehouse at 2PB which  processed 24 billions events per day. (https://www.computerworld.com/article/2535825/size-matters--yahoo-claims-2-petabyte-database-is-world-s-biggest--busiest.html) 

‍

‍

‍