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Greyquill
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Services · Digital transformation & modernisation

The autonomous enterprise starts withthe systems you already run.

Legacy applications, manual processes, disconnected data. We modernise them step by step into systems that can safely run themselves, with an audit trail at every step. No big-bang rewrites, no eighteen-month blackouts.

How we do it

Transformation as a method.

Every engagement follows the same discipline: map what exists, pick one seam, build alongside it, prove the new numbers against the old, then retire the legacy piece. Small steps, each one verified before the next, so the risk stays bounded and the business never stops.

  1. 01

    Map the estate

    Systems, data flows, owners, and risk. We write down what actually exists, not what the architecture diagram claims.

  2. 02

    Pick the seam

    One process or capability with real pain and a small blast radius. Never the whole system at once.

  3. 03

    Build alongside

    The new capability goes up behind a clean interface while the legacy keeps running untouched.

  4. 04

    Run in parallel

    Old and new process the same work. We reconcile the outputs until the numbers match, and show you the evidence.

  5. 05

    Retire and repeat

    Only then does the legacy piece switch off. The next seam starts with everything we learned from the last one.

What we do

The four workstreams of a transformation.

01

Legacy application modernisation

Incremental replacement of the systems everyone is afraid to touch: ageing monoliths, unsupported frameworks, databases nobody dares to migrate. We put a regression harness around the existing behaviour first, carve out one capability at a time along domain seams, and cut over without downtime. The business keeps running throughout.

  • Strangler-fig migration
  • Regression harness first
  • Domain-driven seams
  • Zero-downtime cutovers
  • Database migration with reconciliation
02

Process automation

Manual workflows turned into governed automation, starting from a mapped process, not a tool. Deterministic steps are automated as plain software, reasoning steps get agents, and a configurable human-review threshold decides what needs a person. Every automated step leaves evidence an auditor can query.

  • Workflow mapping
  • Human-in-the-loop thresholds
  • GQ Agents runtime
  • Immutable audit logs
03

Systems and data integration

ERPs, CRMs, spreadsheets, scanners, and mailboxes connected on a common data foundation, so the same customer, product, and transaction mean the same thing everywhere. Where legacy systems cannot change, we put API facades in front of them and move data over event-driven pipelines. This is the groundwork every serious AI program stands on.

  • ERP and CRM connectors (SAP, Tally, and more)
  • API facades over legacy
  • Event-driven pipelines
  • GQData master records and lineage
04

Cloud migration and infrastructure

Migration to the cloud you choose: AWS, Azure, Google Cloud, IBM Cloud, hybrid, or fully on-premise. Everything is defined as code from day one, with observability and cost visibility built in, and your data stays under your keys. When we leave, the infrastructure and the runbooks are yours.

  • AWS · Azure · Google Cloud · IBM Cloud
  • Hybrid and on-premise
  • Terraform and IaC
  • Docker · Kubernetes
  • Observability from day one
Why it matters

Each step leaves you
ready for automation.

Every modernisation step is designed so that when you are ready to let AI act, the data, the controls, and the audit evidence are already in place. Automation becomes a decision you take when it makes business sense.

Tell us about the system everyone is afraid to touch.

30 minutes. We will tell you honestly whether it should be modernised, replaced, or left alone.