 Oracle Fusion Applications were announced shortly after Oracle's US$18 billion acquisition spree of PeopleSoft, JD Edwards, and Siebel Systems in 2005.Oracle Fusion Applications were envisioned and pitched as an enterprise resource planning suite—a combination of features and functionalities taken from the Oracle E-Business Suite, JD Edwards, PeopleSoft, and Siebel product lines.The suite is built on top of the Oracle Fusion Middleware technology stack; both layers implement the Oracle Fusion Architecture, which leverages the capabilities of service-oriented architecture.