There are often multiple sets of credentials that you need to pass to a microservice, some of which may be shared between multiple instances of the service or e

There are often multiple sets of credentials that you need to pass to a microservice, some of which may be shared between multiple instances of the service or even between multiple services. Changing them would require plenty of case-specific updates to service configurations or just one update in the vault. By reducing the amount of work to update the credentials you also reduce security and quality-related risks.