Objectives
After completing this lesson, you will be able to:
This lesson introduces the SAP Enterprise Architecture Methodology and explains the steps to develop an effective architecture.
Lesson 3 contains the following topics:
The ADM provides a detailed plan for developing and implementing an enterprise architecture.
In the last lesson, you learned, that SAP provides a framework based on TOGAF as well as reference architectures and the SAP Reference Solution Architecture, including mapping.
The aim now is to map the company-specific requirements to the SAP reference structures as far as possible. If, for example, it is possible to map a specific functional requirement to the reference business architecture, you already have the corresponding solution architecture, which you can then implement.
The SAP Enterprise Architecture Framework, the SAP Reference Business Architecture and the SAP Reference Solution Architecture are technology agnostic, that is, the Solution Process Flow Diagram can be implemented in any technology. If SAP technology is used, the processes are already implemented and only need to be customized.
The next information is given along the Metro Map, which in turn is based on the TOGAF framework. The individual areas are color-coded to provide you with better orientation. The color scheme means you always know exactly where you are.
The TOGAF framework describes the individual areas from A to H.
The individual steps of the TOGAF framework are mapped onto the metro map. The individual artifacts to be created are named in the metro map.
The use case is defined to clearly outline the requirements and objectives of the architecture project.
The procedure is briefly described below. The illustration is a simplified version of the TOGAF framework.
The procedure can be roughly divided into four areas. These areas are briefly outlined and provided in an overview.
The entire use case is worked on in detail in the course IEA10 as a case study in the exercises. This course also offers certification as an Enterprise Architect.
The four areas are:
The oil and gas business is obsolete.
Establish a lithium-based battery industry as a market leader.
The preliminary architecture phase is used to plan and prepare the detailed architecture development.
You are in the preliminary phase. This belongs to Cross Over (green).
In the Metro Map, this is the starting point.
In this step, all the facts about the required artifacts, reference architectures, patterns, blueprints, and much more are compiled.
Below are two lists of questions to be clarified.
Preliminary
Architecture models are created with:
These BTP Application and Service icons are currently being refreshed and will be officially available in Q4/2023.
The path to be processed in the Metro Map is defined, as shown in the following example.
Requirements management ensures that all requirements are recorded and taken into account in the architecture process.
The following topics are dealt with in the requirements phase. The requirements are compiled:
Functional and nonfunctional requirements are compiled.
The following is an example of a possible result. The results are collected in World, Power Point or similar. Below is a simple summary of the results.
In reality, these documents can be very extensive.
The architectural vision provides a long-term perspective and orientation for the development of architecture.
The following topics are dealt with in the architecture vision phase:
The first result is a strategy map that brings together various aspects.
Ultimately, a solution concept could be created from this, as shown in the following diagram:
The business target architecture defines the structure and processes required to achieve the business objectives.
Once the general part (green area) has been completed and the necessary artifacts, such as the solution concept and others, have been created, the next step is to create the business target architecture with its artifacts.
In the procedure, you find this in the area of business assessment and scoping.
This is the blue area in the Metro Map.
First, the requirement, for example, Offer Pay per uses model fort battery business, is mapped to a business domain depending on the enterprise domain.
In the next step, the preceding requirement is mapped to one of the eight generic business processes. In this case, to the Lead to Cash business process.
The application and data architecture is designed to define the technical solutions and data flows.
Once the SAP Reference Business Architecture has been created (blue area), the next step is to map this to a solution architecture (yellow area). The SAP Reference Solution Architecture is mapped in the SAP Business Accelerator Hub.
This is the yellow area in the Metro Map.
First, the solution concept diagram is mapped to a target architecture overview architecture, as shown in the following screenshot. The focus is again on the Offer Pay per uses model fort battery business requirement.
In the second step, the sales scenario application architecture is created, as shown in the following screenshot.
The application architecture is then created with the help of the SAP Reference Solution Architecture.
In our example, the business process is Lead to Cash, its application architecture for a solution variant, here the Lead to Cash for Cloud Deployment.
This can be used to identify the necessary systems/capabilities that are required according to this process.
In this case these are:
In this case, the SAP Integration Suite is listed very often. Later on in the topic of integration, you will see that there are many ready-made scenarios that are already available out of the box.
In this step, the components from the previous step are mapped to a rough target architecture. The following example includes more than just the one requirement that the training has focused on so far.
The technology architecture comprises the selection and implementation of the technological components required to support the application and data architecture.
In this step, a concrete technology architecture is created. This is then implemented by solution and software architects.
In the Metro Map
The draft architecture is now converted into a reliable, detailed target architecture. The more detailed the better.
are not considered further below.
The solution architects are already involved in this phase. From this point onwards, they assume further responsibility through to successful implementation.
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