But where the customer has custom-built applications and a port is involved, the level of complexity depends on the layer to which it has been written. "Hopefully people have been wise enough to write to the J2EE layer as then it becomes really easy to make the port. When you begin writing to the operating system layer, there are then more things you have to take care of," he said. Sun is also going to offer to deliver a customer-ready system to migrators. This involves a free assessment and then, while the customer continues to run its AIX platform, Sun will work with partners in its iForce centers to move this over quickly once the conversion is done.Sun is not worried about AIX customers moving to Microsofts Windows platform. "I am sure that those customers will have played with Windows in their datacenters before and that, by moving to Unix, made a decision not to bring it in. "There are security, reliability and lock-in issues around Windows. People went with Unix and are so intrigued by Linux because they have alternatives and options. There are more than one Unix and Linux distribution," he said.
"We are also hoping that we can do this as an operating system expense for some customers rather than as a capital expense activity. With the financing options we offer, we can offer a pretty smooth transition without a big capital bump," Singer said.