AWS ACM (AWS Certificate Manager) is a service provided by Amazon Web Services that simplifies the management and deployment of SSL/TLS certificates for use with AWS services. ACM makes it easy to provision, manage, and renew SSL/TLS certificates, eliminating the complexity of manual certificate management.

Here are some key features and benefits of AWS ACM:

1. SSL/TLS Certificate Management: ACM allows you to request and manage SSL/TLS certificates to secure your websites, applications, and resources deployed on AWS. ACM supports wildcard certificates, allowing you to secure multiple subdomains with a single certificate.

2. Integration with AWS Services: ACM seamlessly integrates with various AWS services, including Elastic Load Balancing (ELB), Amazon CloudFront, Amazon API Gateway, and AWS Elastic Beanstalk. You can easily associate ACM certificates with these services, simplifying the deployment and management of SSL/TLS certificates.

3. Automated Certificate Renewal: ACM handles the automatic renewal of SSL/TLS certificates, eliminating the need for manual renewal and ensuring that your certificates remain valid. ACM manages the renewal process and updates the associated services with the renewed certificates.

4. Certificate Validation and Issuance: ACM automatically validates the ownership of the domain when you request a certificate. It uses domain validation methods such as email validation, DNS validation, or Amazon Route 53 validation. Once validated, ACM issues the SSL/TLS certificate.

5. Managed Private Certificate Authority: AWS ACM Private CA extends ACM’s functionality by providing a managed private certificate authority. This allows you to issue and manage private certificates for use within your organization or specific applications.

6. Cost-Effective: ACM is provided at no additional cost for AWS customers. You only pay for the resources you use with the associated AWS services (e.g., ELB, CloudFront), while the certificate management and renewal are included.

By using ACM, you can simplify the process of securing your applications and resources with SSL/TLS certificates on AWS. It eliminates the need to manage certificate lifecycle, automates certificate renewal, and seamlessly integrates with various AWS services, providing a streamlined and secure experience for certificate management.