Enterprise Architecture Management on ProBase

The Bridge Between Business and IT

Sat, 28 Mar 2026 00:00:00 +0000

Information System Architecture – The Bridge Between Business and IT

Information System Architecture (ISA) forms the central link between business requirements and technological implementation. It translates functional requirements from business architecture into concrete information systems while ensuring these can be operated efficiently on the IT infrastructure.

Within the context of Enterprise Architecture Management (EAM), it plays a key role: It connects business processes, data, and applications into a consistent overall picture of the IT landscape.

Role Concepts in EAM

Sat, 28 Feb 2026 00:00:00 +0000

Role Concepts in EAM

Why Roles in EAM?

Enterprise Architecture Management (EAM) operates within the tension between strategy, organization, IT systems, and operational processes. Without clearly defined roles, there is a risk that architecture work remains purely documentary or is carried out in an uncoordinated manner by various parties.

Roles in EAM therefore fulfill several central functions:

1. Clarifying Responsibilities
Architecture decisions affect many areas of a company. Roles ensure clarity on who prepares, makes, or is accountable for decisions.

Once-Only in Documentation

Sat, 14 Feb 2026 00:00:00 +0000

What is the Once-Only Principle?

The Once-Only principle states: Data or information should be captured, stored, and maintained only once – and reused at all relevant points. It avoids redundancy, minimizes sources of error, and reduces maintenance effort. Originally known from public administration and e-government, it is gaining increasing importance in technical documentation – especially in complex, agile, and scalable systems.

Why is Once-Only Important in Documentation?

In software projects, documentation often grows in an uncoordinated manner:

Several ways to model dataflows

Sat, 17 Jan 2026 00:00:00 +0000

Data Flow or Information Flow?

Data flow describes the transmission of raw, unprocessed data, regardless of its business meaning.

In contrast, information flow concerns the transmission of processed or interpreted data that provides the recipient with clear and recognizable value.

Naturally, in an IT environment, when information needs to be transferred, this occurs based on data transfer. Data flow forms the technical foundation for information flow.

The representation forms described in this article use elements of both variants, but the purpose of the information flow is the primary focus.

Portfolios in EAM, made visible with the IPO-model

Sun, 11 Jan 2026 00:00:00 +0000

From IPO to EAM – How Architecture Portfolios Can Be Derived from Simple Questions

The IPO model (Input – Processing – Output) describes a fundamental pattern of information processing.
It is deliberately kept simple and precisely therefore universally applicable – far beyond technical systems.

When this mental model is transferred to Enterprise Architecture Management (EAM), a surprisingly clear logic emerges:
Basic guiding questions can be derived from IPO, which in turn lead directly to the well-known architecture portfolios.

Use the IPO-model with EAM

Sat, 03 Jan 2026 00:00:00 +0000

What is the IPO Model?

The IPO Model refers to the fundamental concept of data processing, where the three letters stand for Input, Processing, and Output.

These three terms describe the basic logic of information processing.

flowchart LR
id1("Input") --> id2("Processing") --> id3("Output")
style id1 fill:#ffff00,stroke:#333,stroke-width:2px
style id2 fill:#00ffff,stroke:#333,stroke-width:2px
style id3 fill:#ffff00,stroke:#333,stroke-width:2px

In the classical sense, this refers to physical components, i.e., hardware:

Input	Processing	Output
Keyboard Mouse Touchpad Joystick Scanner Barcode/QR Code Reader	Main Processor CPU Chipset Controller	Monitor Display Speakers Projector Printer Plotter

However, the principle is much more universally applicable than just for physical IT components.