Domain Driven Design - one of those things like Agile that triggers all sorts of holy wars - has a lot of overlap with the general concept of ontologies, to the point that I've seen some teams formalize all communication between microservices through a shared "ontology", which in reality was essentially a giant XML based descript of valid nouns and verbs that events could use to communicate between services.

Additionally, there's a good deal of overlap with the "semantic web" concept, which itself had a good deal of hype with very limited (but important) application- even the W3C has some published content on how all three fit together: https://www.w3.org/2001/sw/BestPractices/SE/ODA/