Defence & Aerospace
Legacy System Modernisation for Defence & Aerospace
Legacy System Modernisation for defence & aerospace, built around the constraint that defines the sector: systems must run fully air-gapped, on open weights, with no external dependency whatsoever.
- Regulations in scope
- 4
- Systems we integrate
- 4
- Typical first release
- 6 weeks
What changes when it is defence & aerospace
The riskiest asset in a legacy migration is the two people who understand the old system. Knowledge capture comes first, before anyone writes new code.
In defence & aerospace, systems must run fully air-gapped, on open weights, with no external dependency whatsoever. That single fact reshapes how legacy system modernisation has to be built here, the guardrails, the approval points and the evidence trail are design inputs rather than things bolted on before go-live.
The workload we are most often asked to take on first is maintenance prediction, usually integrated against sensor systems. Every engagement opens with a measurement: the cycle time, the cost per transaction, or the error rate we are being asked to move.
Deployed across regulated and unregulated sectors, with audit trails where the regulator expects them. You own the code, the models where they are open-weight, and the documentation to run it without us.
The sector constraints we design around
- Defining constraint
- systems must run fully air-gapped, on open weights, with no external dependency whatsoever
- Regulations in scope
- security clearance requirements · indigenous content norms · export control · classified handling procedures
- Systems of record
- classified networks · logistics systems · simulation platforms · sensor systems
- Where we usually start
- document intelligence on classified material
Legacy System Modernisation workloads in defence & aerospace
- document intelligence on classified material
- imagery analysis
- logistics and inventory optimisation
- maintenance prediction
- training simulation support
What is included
- Dependency and risk mapping of the existing system
- Incremental strangler-pattern migration plan
- Data migration with reconciliation at every step
- Parallel running until the new path is proven
- Rollback plan for every cutover
- Knowledge capture from the people who know the old system
Questions from this sector
Can it work fully offline?
Yes, open-weight models on local infrastructure, with no external API calls at any point in the pipeline.
What about indigenous requirements?
Open-weight models deployed on Indian infrastructure with source-available components satisfy most indigenous content criteria; we structure builds accordingly.
Can we migrate without downtime?
Usually yes, with incremental migration and parallel running. Some database cutovers need a short window, which we plan and rehearse rather than improvise.
What if nobody understands the old system?
That is common and we treat it as the first work package, behaviour is reconstructed from code, logs and observed production traffic before anything is replaced.
How long does it take?
It depends entirely on scope, but incremental migration means value lands continuously rather than at the end of a multi-year programme.
Legacy System Modernisation in other sectors
Other capabilities for defence & aerospace
- AI Agent Development for Defence & Aerospace
- Agentic Workflow Automation for Defence & Aerospace
- LLM Application Development for Defence & Aerospace
- RAG & Knowledge Retrieval for Defence & Aerospace
- Chatbot Development for Defence & Aerospace
- Computer Vision for Defence & Aerospace
- AI Copilot Development for Defence & Aerospace
- Data Engineering for Defence & Aerospace
- Enterprise AI Platform for Defence & Aerospace
- Workflow & Integration Automation for Defence & Aerospace
Legacy System Modernisation for defence & aerospace, worth a conversation?
Tell us the workload and the regulation it sits under. We will tell you what is realistic.
Or email bd@dtrasglobal.com · call +91 74118 77878