IT landscapes should be architected, not accumulated
Over time, IT landscapes grow application by application. A plea for Enterprise Architecture and its four interconnected layers.
Working in IT over the past few years, I have become increasingly interested in a challenge that many organisations face:
A department needs a solution — so an application is introduced.
Another business need emerges — and another solution follows.
Over time, the IT landscape grows. And what made perfect sense as an individual decision can gradually lead to isolated solutions, complex dependencies and fragmented data flows.
The challenge is not necessarily the individual application. It is maintaining the bigger picture as the organisation evolves.
How do our systems support the business strategy? How does data flow across applications? Which capabilities do we actually need? And how should all these elements interact?
IT solutions and business processes should not simply appear within an organisation over time.
They should be consciously designed.
And this is exactly where Enterprise Architecture becomes important.
Enterprise Architecture allows us to look at an organisation through four interconnected layers:
1. Business Architecture
What do we do — and why do we do it? What is our business strategy? Which capabilities and processes support it? And where do these processes create value?
2. Data Architecture
What data do our processes generate and require? Where is this data stored? How is it shared? Can information flow across systems instead of being entered manually several times?
3. Application Architecture
Only then should we ask: Which applications and IT solutions do we actually need? Which systems best support our requirements? Where can existing solutions be reused or consolidated? And most importantly: how do these applications interact with each other?
Integration is key.
4. Technology Architecture
Finally, we consider the technological foundation required to run the architecture securely, reliably and sustainably — together with the technical experts who know this layer best.
For me, this is one of the key differences between simply digitalising individual processes and actually designing a digital organisation.
Technology should not determine how an organisation works.
Strategy, processes, data and technology should be designed as one interconnected system.
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