It’s corporate newspeak. “legacy” isn’t a clear term, it’s used to abstract and obfuscate.
> Legacy components do not leverage a gradual, staged deployment methodology. Cloudflare will deprecate these systems which enables modern progressive and health mediated deployment processes to provide earlier indication in a staged manner and rollback accordingly.
I know what this means, but there’s absolutely no reason for it to be written in this inscrutable corporatese.