nawerdc.blogg.se - Allmänt

How should this company choose from among these four very different approaches to enterprise architecture? This white paper traces the journey the company is likely to face in using any one of these methodologies.

A culture of distrust between the business and technology sides of the organization.

Mission-critical information that is consistently out-of-date and/or just plain wrong.

IT systems that are hindering the organization's ability to respond to current, and future, market conditions in a timely and cost-effective manner.

IT systems that have become unmanageably complex and increasingly costly to maintain.

It does so within the context of a fictional company that is facing some very nonfictional operations problems. This white paper discusses these four approaches to enterprise architecture.

The Gartner Methodology-Can be best described as an enterprise architectural practice.

The Federal Enterprise Architecture-Can be viewed as either an implemented enterprise architecture or a proscriptive methodology for creating an enterprise architecture.

The Open Group Architectural Framework (TOGAF)-Although called a framework, is actually more accurately defined as a process.

The Zachman Framework for Enterprise Architectures-Although self-described as a framework, is actually more accurately defined as a taxonomy.

At this point, perhaps 90 percent of the field use one of these four methodologies: Many enterprise-architectural methodologies have come and gone in the last 20 years.

The field of enterprise architecture that 20 years ago seemed quaintly quixotic today seems powerfully prophetic. Large organizations can no longer afford to ignore these problems. Today's bottom line: even more cost, even less value. The cost and complexity of IT systems have exponentially increased, while the chances of deriving real value from those systems have dramatically decreased. These problems, first recognized 20 years ago, have today reached a crisis point. Poor business alignment-Organizations were finding it more and more difficult to keep those increasingly expensive IT systems aligned with business need.System complexity-Organizations were spending more and more money building IT systems and.The field initially began to address two problems:

Twenty years ago, a new field was born that soon came to be known as enterprise architecture. The Open Group Architecture Framework (TOGAF) The Zachman Framework for Enterprise Architectures (36 printed pages) ContentsĪ Brief History of Enterprise Architecture Although the history of the field goes back 20 years, the field is still evolving-and rapidly so. This paper covers a broad introduction to the field of enterprise architecture. Summary: Twenty years ago, a new field was born that soon came to be known as enterprise architecture.