The word is used to describe something (a single unit) which can be used to show a multitude of issues on a smaller scale. For example, a company which shows everything that is wrong with capitalism. Sort of like an analogy.
2 Answers
Microcosm, which Lexico defines as "A community, place, or situation regarded as encapsulating in miniature the characteristics of something much larger."
Exemplar may fit your context:
a person or thing serving as a typical example or appropriate model.
- "the place is an exemplar of multicultural Britain"