Enterprise software vendor SAP (SAP) finally has a “credible cloud strategy,” says Barclays analyst Raimo Lenschow, who on Friday upgraded the stock to overweight, or buy, from equal weight. “In our view, SAP is beginning to deliver on its strategy to become a cloud vendor and connect its legacy on-premise apps to new app development in the cloud,” Lenschow said in a research note. “This transition is not without risk and the next 18 months is