Stabilise a critical workbook
Clean structure, named logic, protected inputs and clearer ownership so the file can be supported by more than one person.
Spreadsheet modernisation
When a spreadsheet has outgrown its original purpose
XLS Experts helps organisations improve, automate or replace spreadsheet processes that have become fragile, manual, difficult to control or unable to scale — without forcing a rebuild where Excel still works well.
The right level of modernisation — not a one-size answer
Excel remains a highly effective business tool when used appropriately. Many processes only need clearer structure, validation and automation. Others need a database, a shared Microsoft 365 workflow, or a full web application.
Our job is to determine the right pathway: improve the workbook, rebuild legacy VBA, introduce structured data, connect APIs, move into the cloud — or design a hybrid system where Excel stays part of the workflow.
Business warning signs
Signs the current process needs attention.
Only one person understands the spreadsheet
Multiple uncontrolled versions exist across email and shared drives
Staff repeatedly copy and paste data between files or systems
Reporting takes too long or breaks when someone changes a formula
Files are too large, slow or unstable
Formulas and macros break regularly
The spreadsheet is being used as a database
Remote or multi-user access is difficult
The process has clearly outgrown Excel
What XLS Experts can build
- Improve an existing spreadsheet with structure, validation and documentation
- Rebuild legacy VBA into maintainable automation
- Introduce structured data models and controlled inputs
- Office Scripts and Microsoft 365 workflow automation
- SharePoint and Teams-friendly collaboration patterns
- Connect Excel to APIs and external systems
- Move core data into a cloud database
- Build a web application around the process
- Design hybrid systems where Excel remains the analysis layer
Example applications
Automate a repetitive Excel process
Replace copy-paste routines with VBA, Office Scripts or Power Automate so reports and exports run consistently.
Migrate spreadsheet workflows into Microsoft 365
Keep familiar Excel interfaces where useful while moving shared lists, approvals and documents into SharePoint.
Graduate to a cloud application
When multi-user access, permissions and scale matter, we move the process onto a database-backed web app — often still with Excel reporting.
Excel, Microsoft 365 or a cloud application?
Architecture depends on your existing environment, number of users, security needs, collaboration patterns, process complexity, budget and internal capability.
We do not assume every spreadsheet should be replaced. We choose the simplest reliable option that fits how your team works.
Microsoft ExcelVBAOffice ScriptsMicrosoft 365SharePointPower AutomateAPIsSQL Server / PostgreSQLNext.js / React
How we approach modernisation
Understand the current process
We map how work actually happens today — who uses the system, where data comes from, and what slows the team down.
Identify the right level of modernisation
Not every process needs a full rebuild. We recommend the simplest approach that solves the business problem reliably.
Build and test the solution
We deliver working software early, refine it with real users, and validate edge cases before go-live.
Support implementation and ongoing improvement
Training, documentation and a clear path for enhancements so the system keeps matching how you work.
Related work
Examples of similar systems we have delivered for New Zealand organisations.
Fashion Retail
Range Planning & Open To Buy Automation
Max Fashion
Moved linked workbook planning onto a SQL backend while keeping familiar spreadsheets for buyers — with live POS data and more accurate Open To Buy reporting.
View case studies on our homepageHospitality
Valet Parking Hybrid App
Pullman Hotel Auckland
Enhanced an Excel admin console and added a mobile web app on a shared SQL database — a practical hybrid rather than a full platform rewrite.
View case studies on our homepageEnergy
Enterprise Data Analysis Platform
Contact Energy
VBA, pivots and SharePoint integration delivered enterprise analysis inside familiar Excel tooling.
View case studies on our homepageFrequently asked questions
Do you always replace the existing spreadsheet?
No. Many projects succeed by improving the workbook, adding validation and automation, or connecting it to better data sources. Replacement is recommended when Excel is being asked to do something it cannot do reliably — such as multi-user transactional work or acting as a system of record.
Can a system begin in Excel and move to the cloud later?
Yes. We often design an intermediate solution that solves the immediate problem in Excel or Microsoft 365, then plan a later migration once requirements and usage patterns are clearer.
Can you work with our existing Microsoft 365 environment?
Yes. We regularly build solutions that fit within your existing Microsoft 365 tenancy, SharePoint sites, security policies and licensing.
How do you decide which technology to use?
We start with the business process, then weigh user count, collaboration needs, data volume, integration requirements, IT constraints and total cost of ownership — not a preferred technology stack.
Do you support systems after launch?
Yes. We can provide documentation, training and ongoing enhancement support so the solution continues to match how your business operates.
Tell us about your current process
Describe what the spreadsheet does today, what is breaking, who uses it, and what outcome you need. You do not need to know the technology — we will recommend the right level of modernisation.
Discuss your projectStart a conversation
Let's talk about what you need
Big or small, we are happy to discuss it. Send us a message or book a free discovery call — we typically respond same business day.
What happens next
- 1
We review your enquiry carefully and reach out personally — usually same business day. No obligation, no hard sell.
- 2
We clarify scope, then provide a clear fixed-price quote and realistic delivery timeframe so you know exactly where you stand.
- 3
Once agreed, we build in stages, keep you updated, and hand over a solution your team can rely on — with support if you need it.