OASIS is a high-performance ad server built using Linux (RHEL4), Apache, PHP, and MySQL. It is designed to handle many hundreds of thousands of ad impressions per hour. [...] With OASIS, a publisher, network or marketer can manage all of its online advertising components, including sub-publisher accounts, advertisers, campaign set-up, reporting, forecasting, and billing, with an easy-to-use web-based interface accessible from any web browser.