the 3 speed architecture

IT-Specification view

Business view

Work practice view

Platform

Object class

Technology

Package

IS

service

External

actor

Scope

Business

rule

Business

event

Measure of performance

Information

calls

implements

provides

uses

at

at

at

needs

automated

maps

manual

is done by

defined in

triggers

triggers

Basic

task

IT

service

Organisational unit

Business

activity

User

job

Location

External design function

Business perspective