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Snowflake Migration · Oxford

Snowflake Migration in Oxford

Migrating Oxford organisations onto Snowflake, where the temptation is to recreate the warehouse you had. Much of an existing schema exists to work around the old platform's limits — aggregate tables built because queries were slow, extracts created because concurrency was constrained — and carrying those forward means paying for a new platform to behave like the old one.

Why this comes up

The problem

The migration plan reproduces every aggregate table and nightly extract that existed to compensate for the previous system.

What you get

What we deliver

  • Existing structures assessed for whether they solve a problem that still exists
  • Workarounds for old platform limits identified and dropped deliberately
  • Historic data migrated according to what is genuinely queried
  • Transformations rebuilt rather than translated where the old approach was shaped by constraints
  • Access model redesigned, since the previous one reflected different mechanics
  • Parallel running with reconciliation before the old platform is retired

Want this scoped for your business in Oxford?

Thirty minutes, no charge, no sales script. You leave with a written summary of what snowflake migration would actually involve — whether or not you use us.

Book a 30-minute call

Working in Oxford

South East

Oxford's economy runs on research and life sciences, and a lot of the work here starts with a research group or spin-out that needs a prototype turned into something other people can safely use.

Research groups and spin-outs needing a prototype turned into a supportable product make up most of the local demand.

Sectors we work with in Oxford

  • Research & Higher Education
  • Life Sciences
  • Publishing
  • Technology
  • Tourism

What we work with

Technologies and platforms

  • Snowflake
  • dbt
  • SQL
  • Airflow

Who we work with

Industries we serve

  • Financial services
  • Retail
  • Media companies
  • Manufacturing
  • SaaS businesses

Why us

Why Oxford 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

  1. Step 1

    Free consultation

    A 30-minute call to understand the problem. You keep the written summary either way.

  2. Step 2

    Proposal

    Scope, timeline and a fixed price, in writing, before anything starts.

  3. Step 3

    Build

    Short cycles with regular check-ins, so you see progress rather than hear about it.

  4. Step 4

    Launch and support

    We handle the go-live and stay available afterwards.

Snowflake Migration in Oxford — common questions

Why not lift and shift?
Because you inherit the compromises. Pre-aggregated tables, scheduled extracts and denormalised copies exist because the old platform could not answer the question directly — recreating them means the new platform never gets to demonstrate that it can.
How much history should move?
What is queried, plus what you are required to keep. Storage is inexpensive and migration effort is not, so bringing decades of detail that nobody has queried since it was written is cost without a corresponding use.
What about existing transformations?
Review them rather than translating. Logic written for a platform with different performance characteristics is frequently structured around avoiding operations that are now trivial, and rebuilding it produces something simpler as well as faster.
Is parallel running necessary?
For at least one full reporting cycle. Numbers must reconcile between old and new before anyone decommissions anything, and a month-end comparison finds the discrepancies that daily checks pass over. It also gives the finance and reporting teams a period to build confidence in figures they will shortly have no way of checking against anything.
Do you work with businesses across Oxfordshire?
Yes. We are based in Leicester, United Kingdom and work with clients throughout South East, including Oxford and the surrounding Oxfordshire area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
What kind of Oxford businesses do you usually work with?
Research groups and spin-outs needing a prototype turned into a supportable product make up most of the local demand. Beyond that we work across Research & Higher Education, Life Sciences, Publishing, Technology and Tourism.
Do you cover the areas around Oxford?
Yes — we work throughout South East, including Reading, Milton Keynes, Cambridge, London. Oxford is an urban area of roughly 170,000+, and we take on work across the wider Oxfordshire region rather than the city boundary alone.

Talk to us about Snowflake Migration in Oxford

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

Or reach us directly

07707 771599admin@asionis.com

Leicester, United Kingdom