WSA Introduction
The Sigmafine Web Services (i.e. Sigmafine Web Service Access or Sigmafine WSA) is a standard ASP.NET XML Web Service. WSA is able to read and write all types of Sigmafine data and generally any OSISoft PI-Asset Framework data, thereby allowing the data and methods to be exposed in a standard XML SOA representation and paradigm.
For further details see Technology and Advanced Features.