What is a Living Architecture?
A living architecture is a dependency map of a production system that is discovered from traffic, code, and configuration rather than drawn by hand, and refreshed after every deploy. It shows which services call which, what each depends on, and how that changed with the last release. In an Agentic Operations Center it is one of the two visible byproducts of central memory: the picture of production that investigations keep correcting.
Why hand-drawn architecture diagrams fail
An architecture diagram is accurate on the day it is drawn. Every deploy after that adds a dependency, removes one, or reroutes traffic, and nobody goes back to update the slide. During an incident the on-call engineer either trusts a stale picture or rebuilds the real one from traces under pressure. A living architecture removes that choice: the map is derived from what the system actually does, and each investigation that discovers a dependency the map lacked writes it back.
How a living architecture is built and used
The center derives the map from three sources it already queries in place: traffic (traces and service-mesh telemetry showing who calls whom), code (repositories and build manifests declaring dependencies), and config (infrastructure definitions, Kubernetes manifests, and cloud accounts). After each deploy it re-derives the affected region and records the diff. Agents use the map to bound an investigation to the services that could plausibly be involved, to explain blast radius when proposing a remediation, and to spot the dependency that appeared in the last release and did not appear in the runbook.
What to remember
- 1A living architecture is discovered from traffic, code, and config, not drawn by hand
- 2It is refreshed after every deploy and records what changed
- 3Investigations correct it: a dependency the map lacked is written back to memory
- 4Agents use it to bound investigations and explain blast radius
Frequently asked questions
Is a living architecture the same as a service map in an APM tool?
It overlaps. An APM service map shows traffic inside one vendor’s data. A living architecture combines traffic with code and config across every connected source and is corrected by the investigations that run against it.
Does it replace our architecture documentation?
It replaces the parts that go stale. Design intent still belongs in documents; what actually calls what belongs in a map that updates itself.
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