Each domain is focused on a separate aspect of the end-state architecture, to ensure comprehensive coverage of the capabilities required to support SOA. In addition, each domain is decomposed to various levels of abstraction (Conceptual, Logical and Physical). The decomposition of each architectural domain is shown below:

gESA Architectural Domain Decomposition
By evolving a Reference Architecture in this way, glue: is able to retain a vendor neutral end-state definition (through it’s gESA Conceptual & Logical Views), while also defining detailed relationships between this and common SOA technology platforms (such as Sun JCAPS, Oracle Fusion, SAP Netweaver, webMethods Fabric and many more) as shown below:
