Protect continuity
Keep current operations working while dependencies are progressively moved behind stable contracts.
Use Case · Progressive Core System Modernization
Build around the core before you replace the core.
Core systems often contain decades of business logic, operational knowledge and dependencies. The modernization problem is not simply choosing a replacement. It is creating enough architectural freedom to change without forcing every dependent application to move at the same time.
The challenge
Replacement gets harder when surrounding systems depend on implementation details.
Payload structures, database schemas, authentication methods, timing assumptions and undocumented behaviour can turn a core replacement into an enterprise-wide change programme.
The Avato approach
Introduce stable boundaries that can survive the core.
Avato can expose useful business capability through durable interfaces, adapt information and protocols at the boundary, and coordinate downstream work while the existing core continues operating.
Enable new capability
Let new applications consume stable services instead of coupling directly to the old core.
Preserve future choice
Retain, upgrade or replace the core later without automatically redesigning every consumer.
What stays / what changes
Modernization becomes a sequence of manageable changes.
What can stay
- Critical business operations
- Useful core capability
- Existing applications that do not need immediate change
→
What changes
- How consumers depend on the core
- Where transformation and orchestration live
- How new capability is introduced
Evidence
See the approach in practice.
In a Canadian financial institution, Avato preserved three critical applications without code changes during a core replacement. The implementation subsequently supported additional modernization initiatives.