2.1 Overview2.2 Architecture goals2.2.1 Use standard, non-customized SAP applications2.2.2 Reuse pre-built SAP integration2.2.3 Use best-in-class technologies when extending beyond the SAP domain2.2.4 Use open, well-established standards2.2.5 Use pre-built software capabilities provided by IBM2.3 IBM Reference Architecture for SAP overview2.3.1 Systems of engagement, interaction, and record2.3.2 Services view2.3.3 Application integration: Inner ring and outer ring architecture2.3.4 Enterprise integration services2.3.5 Process optimization2.3.6 User interface2.3.7 Master data management2.3.8 Enterprise content management2.3.9 Business analytics2.3.10 DevOps for SAP