High Level Architecture Design document
The blue-print for the target system: every module defined, every interaction specified, written so a developer knows what to build.
Core Solutions
Legacy Modernization
A working system is an asset, not a liability.
Legacy systems carry years of encoded business knowledge: rules, edge cases and hard-won corrections that exist nowhere else. That knowledge is worth preserving even when the structure around it has become difficult to extend.
We modernize by restructuring, not by starting over. The behaviour your organization depends on is retained; what changes is the architecture that surrounds it.
How we approach it
01
Read the system as it is
We analyze the existing code and recover the design that is actually in it: the real boundaries, dependencies and data flows, which are rarely the ones on the original diagram.
02
Recover the business domain
Behind the implementation sits the domain the system serves. We reconstruct it, together with your people, because the target architecture must be derived from the domain rather than from the current code.
03
High Level Architecture for the target
We design the structure the system should have: building blocks that encapsulate volatility, cover the whole domain, and repeat the same pattern at every scale. You receive it as a document that defines each module and how the parts interact at run time.
04
Detailed Design and a staged route
Detailed design turns the target into buildable work, sequenced so the system keeps running throughout. Migration proceeds block by block, each stage delivering value on its own rather than depending on a single cut-over.
What you receive
Migration sequence
A staged plan with cost, duration and risk attached to each stage, derived by Critical Path analysis rather than estimated.
Standards-compliant specifications
Where your sector requires it, design documentation written to military, medical or industrial standards, including MIL-STD Software Design Description.