An integrated approach to shape and topology optimization of structural systems is presented. Importantly, the design space for a Solid Isotropic Material algorithm as well as the surrounding structure is varied in conjunction with topology optimization, and an automated process has been developed in response to limitations in traditional methods. Namely, shape optimization approaches usually cannot suggest new load path configurations, while topology methods are confined to single parts or require human interpretation during post processing. The authors have developed a tool set that links both approaches into an Integral Shape/Topology Method (IST) that can be applied for complex structures. By performing large scale shape variation in conjunction with topology optimization, an additional dimension to topology methods is introduced, and can lead to combined optimum shape and loadpath layouts of complex designs. IST is realized by integrating commercially available software tools like the parametric CAD package CATIA|SFE CONCEPT and topology optimisation tools such as SIMULIA Tosca or Altair Optistruct with proprietary software written in Perl and C++.