Data Migration · York
Data Migration in York
Moving a York organisation's data from an old system into a new one. Migration is where system replacements fail, and almost always for the same reason: the old data is messier than anyone believed, and nobody found out until the week the new system was meant to go live.
Why this comes up
The problem
A new system is being implemented and the migration is a line on the plan with no detail. Nobody has looked at the old data closely enough to know what state it is in.
What you get
What we deliver
- Source data profiled early, so the real state is known while there is time to act
- Mapping documented field by field, including what has no destination
- Cleansing and deduplication decisions made explicitly rather than by whoever runs the script
- Trial migrations run repeatedly, since the first one is never right
- Reconciliation proving what moved — counts and values matched, not assumed
- A rollback plan, because cutover is the point of no return without one
Want this scoped for your business in York?
Thirty minutes, no charge, no sales script. You leave with a written summary of what data migration would actually involve — whether or not you use us.
Working in York
Yorkshire & the Humber
York's economy leans heavily on heritage tourism, and the practical constraint here is often that a visitor-facing system has to handle enormous seasonal swings on a small operator's budget.
Visitor-facing booking and ticketing systems that handle extreme seasonality on a small operator's budget.
Sectors we work with in York
- Tourism & Heritage
- Rail Engineering
- Bioscience
- Retail
- Higher Education
What we work with
Technologies and platforms
- Python
- SQL
- PostgreSQL
- Azure Data Factory
- dbt
Who we work with
Industries we serve
- Financial services
- Healthcare
- Manufacturing
- Retail
- Professional services
Why us
Why York businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in York
Looking for the full picture? See our Data Migration services, everything we do in York or browse everything we do.
Data Migration in York — common questions
- Why do migrations go wrong so often?
- Because data quality is discovered late. Duplicate customers, dates in three formats, notes fields holding structured information — none of it is visible from a schema. Profiling the actual data early is the single highest-value step in the whole project.
- Should we migrate everything?
- Usually not. Old records nobody has opened in five years cost effort to map and clean, and often carry data protection obligations. Archiving rather than migrating is frequently the better answer, provided the archive stays accessible.
- How many trial runs are needed?
- More than one, always. The first reveals problems, the second reveals the problems your fixes introduced, and the last should be a rehearsal that runs clean against a full copy — timed, so cutover duration is known rather than hoped for.
- How do we prove the migration worked?
- Reconciliation before anyone signs off: record counts, financial totals and sampled records compared between systems. Without it, discrepancies surface weeks later when the old system has been decommissioned and the evidence is gone.
- Do you work with businesses across North Yorkshire?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout Yorkshire & the Humber, including York and the surrounding North Yorkshire area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of York businesses do you usually work with?
- Visitor-facing booking and ticketing systems that handle extreme seasonality on a small operator's budget. Beyond that we work across Tourism & Heritage, Rail Engineering, Bioscience, Retail and Higher Education.
- Do you cover the areas around York?
- Yes — we work throughout Yorkshire & the Humber, including Leeds, Newcastle, Sheffield. York is an urban area of roughly 210,000+, and we take on work across the wider North Yorkshire region rather than the city boundary alone.
Talk to us about Data Migration in York
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise