System Architecture and Design
Build a finance system that matches your business - not the other way round. Too often, organisations outgrow the architecture of their finance systems long before they outgrow the business itself.
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Finance technology should support your business structure, not constrain it.
Fragmented data, siloed processes, limited reporting - and teams spending more time working around the system than working through it.
That’s where itas comes in.
Our System Architecture and Design service ensures your finance system is structurally aligned to your organisation’s needs—from how your business is organised, to how you report, scale, and make decisions. Whether you’re implementing Sage Intacct, Sage 200, or an integrated business platform, we help you get the foundation right.
Why architecture matters
System architecture is the underlying structure that defines how your system:
If your system isn’t designed to reflect your company structure, you’ll face recurring issues:
Who this is for
Our System Architecture and Design service is built for UK-based businesses that are:
Implementing a new Sage finance or ERP system (e.g. Sage Intacct, Sage 200)
Migrating from legacy platforms or fragmented setups
Growing through acquisition or restructuring group entities
Seeking better control and visibility across multiple departments, divisions, or geographies
Planning group consolidation, investor reporting, or audit uplift
Replacing spreadsheet-driven workarounds with structured automation
We work closely with CFOs, Finance Directors, IT leads, and transformation teams to design architecture that works in practice—not just on paper.
What We Deliver
Every engagement is tailored to your organisation, but our architecture work typically covers:
Clear documentation of your current company and reporting structure
Mapping of entities, locations, departments, and business units
Design of chart of accounts structure, dimensionality, and entity relationship
Definition of user roles, permissions, and workflow ownership
Recommendations for data models, master data management, and integration points
A system architecture blueprint ready for implementation or system migration
Our goal is to build a foundation that gives you flexibility, scalability, and financial clarity—not just something that works for “go-live”.
“Working with itas during the early stages of our transformation gave us the clarity we needed to approach vendors with confidence. Their insight into the finance function made a huge difference. We didn’t just buy a system—we made a strategic investment that’s now paying off.”
Our approach to system architecture design
We combine finance-first thinking with real-world Sage system experience. Here’s how we typically structure the engagement:
Example use cases
Here are some real-world examples of when this approach makes the difference:
Scaling from SME to group structure
A professional services firm moving from Sage 50 to Sage Intacct needed to reflect their new group holding structure, with four operational subsidiaries and shared services. We designed a multi-entity, multi-dimensional architecture that enabled seamless consolidation, improved visibility by function, and automated intercompany billing.
Simplifying a bloated chart of accounts
A UK-based manufacturer had over 2,500 GL codes—many redundant or duplicated. We redesigned the CoA and introduced cost centre and product line dimensions to replace the need for code proliferation. Reporting became faster, cleaner, and easier to maintain.
Preparing for acquisition and integration
A business planning to acquire two new subsidiaries needed a flexible Sage 200 structure that would allow for post-acquisition integration. We designed a framework that accommodated future entities without rework—simplifying onboarding and reporting.
What makes itas different?
We’re not just implementation consultants. We’re finance specialists who understand that the wrong architecture decision can cost you years of workarounds.
Clients value us because we:
- Understand both the technical and operational impact of design decisions
- Combine best practice with a deep knowledge of Sage system capabilities
- Think commercially, not just systemically
- Explain design options in plain English—not technical jargon
- Work with your people, not around them
- Support clients with multi-entity, cross-border, and regulatory complexity
When is the right time to get architecture support?
Before a new Sage system is implemented
When restructuring or scaling the business
When visibility is poor despite strong systems
When you’ve inherited a system that no longer fits
When preparing for audit, investor scrutiny, or group consolidation
When users are creating spreadsheets to work around the system
Let’s design the right structure—for now and what’s next
Your finance system isn’t just a ledger. It’s a reflection of how your business works. If the structure doesn’t match the business, the system will always fall short.
At itas, we help you build a system that aligns with your company structure, enhances visibility, and lays the foundation for smarter financial management.
Book a free consultation to explore how System Architecture and Design can help you structure for success.
Why choose itas as your transformation partner?
At itas, we don’t believe in designing systems that look good on paper but fall apart in practice. Whether you’re implementing Sage, integrating third-party tools, or modernising legacy platforms, our System Architecture & Design service helps you create a structure that’s stable, scalable, and supports how your finance team actually works. We bring together process, platform and people - because system design isn't just a technical exercise. It's a business decision. We focus on:
Great implementation starts with great design. And great design starts with a partner who knows how to ask the right questions. Let’s design a system that works—today and tomorrow.
