# Parameter resolvers

- [Built-in parameter resolvers](/parameter-resolvers/built-in-parameter-resolvers.md)
- [Stack output resolver](/parameter-resolvers/built-in-parameter-resolvers/stack-output-resolver.md)
- [External stack output resolver](/parameter-resolvers/built-in-parameter-resolvers/external-stack-output-resolver.md)
- [Command resolver](/parameter-resolvers/built-in-parameter-resolvers/command-resolver.md)
- [File contents resolver](/parameter-resolvers/built-in-parameter-resolvers/file-contents-resolver.md)
- [Hook output resolver](/parameter-resolvers/built-in-parameter-resolvers/hook-output-resolver.md)
- [SSM parameter resolver](/parameter-resolvers/built-in-parameter-resolvers/ssm-parameter-resolver.md)
- [Secret resolver](/parameter-resolvers/built-in-parameter-resolvers/secret-resolver.md)
- [Custom parameter resolvers](/parameter-resolvers/custom-parameter-resolvers.md)