What does an Enterprise Architect do?
An Enterprise Architect connects business strategy to technology decisions across the organization.
Hire an Enterprise Architect when technology decisions need enterprise-wide coordination. For one migration or one program, a domain or solutions architect may fit better.
Responsibilities
The role establishes a coherent view of how:
- Business capabilities
- Applications
- Data
- Integrations
- Infrastructure
- Cloud platforms
- Security
- Emerging technology
should evolve together.
A current Boston-area Principal Enterprise Architect role describes the position as the strategic bridge between business leadership and technology teams, responsible for enterprise technology strategy, target-state architecture, roadmaps, application rationalization, integration patterns, cloud, data, AI, and governance.
Define target-state architecture
Describe how the enterprise should evolve over multiple years.
That can include:
- Application portfolios
- Core enterprise platforms
- Integration architecture
- Data platforms
- Cloud adoption
- Infrastructure modernization
- Security architecture
- AI capabilities
Build technology roadmaps
Translate target architecture into sequenced change.
A roadmap should answer:
- What needs to change?
- Why does it matter?
- What depends on what?
- What should happen first?
- Which platforms should be retired?
- Which investments should be extended?
- Where should the organization standardize?
Establish architecture standards
Define reusable principles, patterns, and decision criteria.
That can include:
- Integration patterns
- Application design standards
- Cloud standards
- Data standards
- Identity patterns
- Preferred platforms
- Technology lifecycle standards
Govern major technology decisions
Review significant programs and investments to determine whether they align with:
- Business strategy
- Target architecture
- Security requirements
- Platform strategy
- Long-term maintainability
Connect executives and technical teams
Enterprise Architects need to explain:
- Technical debt
- Architecture tradeoffs
- Investment priorities
- Modernization choices
- Technology risk
in language that business leaders can use to make decisions.
How is an Enterprise Architect different from similar roles?
| Role | Primary focus | Typical outputs | Core strengths | When to hire |
|---|---|---|---|---|
| Enterprise Architect | Alignment across business and technology domains | Target architecture, roadmaps, principles, portfolio decisions, governance | Applications, data, infrastructure, cloud, integration, strategy | When technology decisions need enterprise-wide coordination |
| Solutions Architect | Architecture for a particular solution or program | Solution designs, integrations, technology selections | Applications, cloud, APIs, solution design | When one initiative requires detailed technical architecture |
| Cloud Architect ↗ | Enterprise cloud architecture | Landing zones, cloud roadmaps, migration patterns, networking | AWS/Azure/GCP, cloud security, networking, FinOps | When cloud adoption or migration is the main architecture problem |
| Data Architect ↗ | Enterprise data architecture | Data models, lakehouse/warehouse designs, governance, integration | Data platforms, modeling, governance | When trusted and scalable data is the primary concern |
| Security Architect ↗ | Security architecture | Security patterns, threat models, reference architectures | IAM, cloud security, application security, risk | When security design is the dominant concern |
| Application Architect | Application landscape and software architecture | Application patterns, service designs, modernization standards | Software architecture, APIs, integration | When application modernization is the primary need |
| Infrastructure Architect | Compute, network, storage, workplace, infrastructure | Infrastructure standards and target designs | Networks, cloud, compute, storage, resilience | When infrastructure transformation requires dedicated depth |
Do you actually need an Enterprise Architect?
Hire an Enterprise Architect when the organization repeatedly faces questions such as:
- Which technology investments support our business strategy?
- Which applications should we modernize, replace, consolidate, or retire?
- Why do several business units own systems that perform the same function?
- What should our target technology environment look like in three to five years?
- How should cloud, SaaS, on-premises infrastructure, and enterprise platforms fit together?
- How should applications exchange data?
- Where should technology standards be mandatory?
- How should acquisitions be integrated?
- How should AI fit into the existing technology landscape?
- Which technical debt presents the greatest business risk?
- How do we sequence major transformation programs?
- Which capabilities should be centralized?
- Where should business units retain flexibility?
If the main challenge is one cloud migration, a Cloud Architect may be more appropriate.
If the scope centers on a single application or program, consider a Solutions Architect.
If the organization primarily needs implementation capacity, an architect may not solve the underlying bottleneck.
What areas should an Enterprise Architect understand?
Architecture scope
TOGAF's conventional Enterprise Architecture model spans business, data, application, and technology architecture.
For modern enterprises, practical EA frequently extends into security, integration, cloud, and emerging technologies as well.
Business architecture
Understand:
- Business strategy
- Capabilities
- Value streams
- Operating models
- Organizational dependencies
The architect should understand why technology exists before deciding how it should evolve.
Application architecture
Understand:
- Application portfolios
- Core enterprise systems
- SaaS
- Custom applications
- APIs
- Application dependencies
- Modernization
- Technical debt
Data architecture
Understand:
- Data domains
- Systems of record
- Data movement
- Analytics platforms
- Governance
- Data ownership
- AI/ML data requirements
Technology architecture
Understand:
- Cloud
- Networks
- Compute
- Storage
- Platforms
- End-user technology
- Infrastructure standards
Security
Understand enough about:
- IAM
- Data protection
- Cloud security
- Application security
- Regulatory requirements
- Architecture risk
to ensure target architectures can be secured realistically.
Integration architecture
Understand:
- APIs
- Events
- Messaging
- ETL/ELT
- Middleware
- iPaaS
- File transfer
- Service integration
Enterprise complexity often becomes visible first through integration.