Signal Taxonomy

Definition. The classification of buyer signals by source: zero-party (volunteered directly, e.g. a form or preference), first-party (your own observed behavior, e.g. site visits, product usage, badge scans), and third-party (external intent and firmographic data). Determines reliability and how a signal should be weighted in scoring and routing.

@misc{shalvi_gtm_signal_taxonomy,
  author = {Singh, Shalvi},
  title  = {Signal Taxonomy — GTM World Model Glossary},
  year   = {2026},
  url     = {https://shalvisingh.com/gtm/glossary/signal-taxonomy}
}