Notes from building Signal9.

Field Notes and Guides from building Signal9, short, opinionated pieces on alert management, on-call, incident management, the ICDB, MCP tool design, and the design rules behind the platform.

Field Notes take a position, per-seat pricing, the blind spot between observability and incident management, what the NOC is really doing, why similarity is not relevance. Guides are practical, centralizing alerts, backtesting automation rules, running 24/7 support solo.

Every article leads with its answer, shows its evidence, and says where Signal9 stands.