Home The TOGAF® Standard

Word Search | Search Index

Advanced Search
Provide feedback on this page

TOGAF® Fundamental Content

Extended Guidance

General How-To

Establishing an EA Team

Agile Methods
Business Architecture
Data/Information Architecture
Security Architecture

Reference Models & Method

5. Phase C: Information Systems Architectures

Chapter Contents: 5.1 Objectives | 5.2 Approach

This chapter describes the Information Systems Architectures for an architecture project, including the development of Data and Application Architectures.

Figure 5-1: Phase C: Information Systems Architectures

5.1 Objectives

The objectives of Phase C are to:

5.2 Approach

Phase C involves some combination of Data and Application Architecture, in either order. Advocates exist for both sequences. For example, Steven Spewak's Enterprise Architecture Planning (EAP) recommends a data-driven approach.

On the other hand, major applications systems — such as those for Enterprise Resource Planning (ERP), Customer Relationship Management (CRM), etc. — often provide a combination of technology infrastructure and business application logic. Some organizations take an application-driven approach, whereby they recognize certain key applications as forming the core underpinning of the mission-critical business processes, and take the implementation and integration of those core applications as the primary focus of their architecture effort (the integration issues often constituting a major challenge).

Detailed descriptions for Phase C are given separately for each architecture domain:

return to top of page