A company has hundreds of independently maintained copies of common infrastructure. It needs versioned reusable products while preserving team deployment autonomy. Which service most directly supports a governed internal catalog?

1. AWS Service Catalog with approved products, portfolios, and launch constraints.
2. A Route 53 hosted zone containing template names.
3. A public S3 bucket containing all deployment credentials.
4. An unversioned shared text document with unrestricted administrator instructions.