All AsyncAPI specs MUST include a servers section including references to the right Kafka clusters, defined and maintained globally.
For example, in Swaggerhub it is possible to refer to those reusable definitions through:
https://design.api.3stripes.io/domains/adidas/asyncapi_adoption_commons/1.0.0
more specifically, it is possible to add the right Kafka servers like this:
...
servers:
pivotalDev:
$ref: https://design.api.3stripes.io/v1/domains/adidas/asyncapi_adoption_commons/1.0.0#/components/servers/pivotalDev
pivotalSit:
$ref: https://design.api.3stripes.io/v1/domains/adidas/asyncapi_adoption_commons/1.0.0#/components/servers/pivotalSit
pivotalPro:
$ref: https://design.api.3stripes.io/v1/domains/adidas/asyncapi_adoption_commons/1.0.0#/components/servers/pivotalPro
...
Important note Don't forget to include '/v1/' in the URL of the domain