As the title says, how do you change a secret that half of your production applications use right now?

The context of the question is https://devops.stackexchange.com/questions/3658/secrets-management.

As the title says, how do you change a secret that half of your production applications use right now?

As the title says, how do you change a secret that half of your production applications use right now? Thanks

As the title says, how do you change a secret that half of your production applications use right now?