Introduction to Enterprise Architecture
What It Is
Section titled “What It Is”Enterprise Architecture (EA) gives an organization a single, coherent view of how its business capabilities, processes, and technology fit together. Rather than focusing on one system or project, EA operates at the level of the whole organization: mapping what the business does, what technology supports it, and where the two should evolve together.
EA typically produces artifacts like capability maps, target-state roadmaps, and technology standards. These are not implementation blueprints — they are the strategic context that solution and software architects design within.
Why It Matters
Section titled “Why It Matters”Without an enterprise view, individual teams and projects tend to optimize locally: choosing different platforms, duplicating capabilities, or building integrations that make sense in isolation but create long-term complexity. Enterprise Architecture exists to prevent this by aligning technology investment with business priorities, reducing duplication, and giving leadership a way to reason about trade-offs across the whole portfolio.
Who It’s For
Section titled “Who It’s For”IT leaders, enterprise architects, and digital transformation teams who need to connect business strategy to technology direction — setting standards and roadmaps that downstream solution and software architecture decisions build on.
Topics in This Section
Section titled “Topics in This Section”- Business Capability Mapping — describing what the business does, independent of org structure or technology.
- The Four Architecture Domains (BDAT) — the Business, Data, Application, and Technology views of the organization.
- EA Frameworks (TOGAF, Zachman) — shared methods for doing architecture work consistently.
- Target Operating Model & Roadmapping — connecting a future-state vision to a fundable, sequenced plan.
- Architecture Governance — decision rights, standards, and review processes.
- Application Portfolio Management — inventorying and rationalizing the application estate.
- Reference Architectures & Technology Standards — reusable blueprints that reduce inconsistency and risk.
- Stakeholder Management & the Architecture Repository — communicating architecture and keeping it current.
- Glossary — quick definitions for the acronyms and terms used throughout this section.
Related Reading
Section titled “Related Reading”Enterprise Architecture is the first of seven perspectives covered on the Explore Architecture by Level page, which orders disciplines by organizational altitude (strategy down to services).
Where This Fits in the Learning Sequence
Section titled “Where This Fits in the Learning Sequence”In this site’s recommended developer learning sequence (see the Learning Path), Enterprise Architecture comes last, seventh of seven — even though it sits at the top of the altitude view above. Its frameworks, governance, and portfolio concepts are easier to appreciate once you’ve seen the concrete decisions and trade-offs they exist to coordinate, from Software & Application Architecture through Security Architecture. Read it last, as the discipline that ties the rest together rather than one you need before starting.