Santa Clara, Calif.--Yahoo! Inc. said Wednesday it has teamed with enterprise software developer SAP AG to co-market corporate Internet portals that bear Yahoo!'s familiar corporate identity. The move is designed to jumpstart Yahoo!'s corporate portal strategy, which aims to sell corporations on custom Internet sites designed to meet employee needs. SAP, Walldorf, Germany, has been tailoring its software products for use on the Internet through an initiative called MySAP. The corporate Internet offerings will be available by July.