Objectiver is a requirements analysis tool (see http://www.objectiver.com/). It allows to capture requirements for any kind of project using the KAOS method.

By linking Operations elements to Projects and assigning a performance relationship to Agents, one can define the Services Containers (agents) as well as their services (operations) with Input and Output parameters represented as Entities.

In the following design the CustomerLookupService performs one operation : searchCustomer having a SearchPattern and SearchString as input and a CustomerList as output.

See an image here http://jfdeclercq.blogspot.com/2006/12/soa-design-with-objectiver.html

The advantage of this method is to be able to derive the SOA out of the Business Requirements.

SOA IT