US virtual computing provider Citrix invests an undisclosed sum in Cupertino based cloud software provider CumuLogic.

The fund comes from Citrix Startup Accelerator, the early stage investment unit of Citrix Systems, a US technology company.

CumuLogic, a startup created by former Sun Microsystems employees, aims to develop programming which upgrades virtual servers from providing Infrastructure as a service (IaaS) to Platform as a Service (PaaS).

Traditional IaaS services allocate virtual machines to clients who are then required to upload install and patch an operating system and the relavant programming tools, whereas the newer PaaS model aims…