AWS Certificate Manager (ACM) is the service specifically designed for the centralized management of SSL/TLS certificates within the AWS ecosystem. It simplifies the process of deploying certificates to secure websites and applications running on AWS. ACM provides a way to easily request, manage, and deploy SSL/TLS certificates for use with AWS services without the need for manual certificate management tasks. This encompasses automatic renewals, key management, and integration with other AWS services like Elastic Load Balancing and Amazon CloudFront.
In contrast, other services mentioned serve different purposes. AWS Key Management Service (KMS) is focused on creating and controlling encryption keys used to encrypt data. AWS Secrets Manager helps securely store and manage sensitive information, such as API keys and database credentials, but does not specifically handle SSL/TLS certificates. AWS CloudFormation is used for infrastructure as code, allowing users to model and provision AWS resources, but it does not directly manage SSL/TLS certificates. Thus, ACM is the appropriate choice for managing SSL/TLS certificates centrally in AWS.