SAP's business is gradually shifting to the SaaS (software as a service) model while sales of its Hana in-memory database platform continue to grow quickly, according to preliminary fourth-quarter and year-end results the company released Friday. Software revenue for the quarter ended Dec. 31 fell 2 percent on an IFRS (international financial reporting standards) basis to 1.9 billion ($2.58 billion), while cloud subscriptions and support jumped 66 percent to 209 million ($284 million), SAP said.