SAP EA Methodology - Metro Map
The SAP Enterprise Architecture Methodology - Metro Map outlines the following:
- The full set of architecture artifacts (recommended and optional)
- Input from the SAP Reference Architecture to define the target architecture both in terms of business and IT domains
- References to existing architecture work products such as principles, standards and guidelines as well as existing baseline business and solution architectures

The selection of artifacts again very much depends on the nature of the architecture project and the stakeholders involved. These should be selected for the sake of the stakeholders (not for the sake of architecture).
Take note that there will be iterations within and across the individual phases (the intention of the visualization is not to give the impression of a waterfall-based approach).
SAP Enterprise Architecture Methodology - Methodology aligned with the TOGAF
The SAP Enterprise Architecture Methodology is a methodology aligned with the TOGAF standard and tailored to the SAP Reference Architecture.

The SAP Enterprise Architecture Methodology has evolved from the formerly known Industry Reference Architecture (IndRA) framework, an SAP internal project.
It provides a comprehensive approach used by SAP and customers to systematically map IT Solutions to business needs. Internally SAP uses the framework to build enterprise architecture content. Customers apply the framework to define their desired future business scope and desired target architecture.
The recommendation for our customers is to follow a phased approach. It can be used by any enterprise to find the IT Solutions that meet their business need. Same holds true also for SAP's own IT.
This approach is in line with the TOGAF® standard from The Open Group, a proven EA methodology used by the world’s leading organizations to improve their business efficiency.
The TOGAF Architecture Development Method (ADM) cycle is the result of continuous contributions from a large number of architecture practitioners. It describes a method for developing and managing the lifecycle of an Enterprise Architecture.
The ADM is highly iterative: Within phases, between phase, between cycles, stakeholder reviews after the phases.