olemus
kontekstist sõltuva sisuga kiht mõnedes mudelites
NB! mitte OSI ega TCP/IP-mudelis
=
a context-dependent layer in some models
(not in OSI or TCP/IP)

näiteid
https://www.optimizesmart.com/google-tag-manager-data-layer-explained-like-never/

https://www.grazitti.com/blog/how-to-leverage-data-layer-with-google-analytics/

https://www.simoahava.com/analytics/data-layer/

https://segment.com/blog/what-is-a-data-layer/

https://developer.android.com/topic/architecture/data-layer