Modern systems fail not because they’re distributed, but because their structure no longer reflects the business they serve. As domains grow more complex, this gap becomes the dominant source of cost and risk. Cohesive Systems exists to close that gap.

What goes wrong today?

Why most systems break as they grow:

• Business logic scattered across services, workflows, and glue code - no single source of truth for system behavior.
• State changes implicit and fragile, encoded in control flow instead of explicit transitions and invariants
• Read models rebuilt ad hoc for every UI, report, and integration, leading to drift and duplication
• Frameworks dictating structure, forcing the domain to conform to tooling rather than the other way around

Cohesive response

Cohesive starts from the domain, not the framework:

• Define one explicit model: entities, transitions, invariants.
• Make behavior testable and observable via explicit rules and transition semantics.
• Derive APIs/UIs/analytics/integrations as presentations of that model.
• Keep change localized so evolution is incremental, not rewrite-driven.
• Outcome: coherent, executable systems that scale with the business.

References

Cohesive & SaaS

Cohesive & AI