AWS Certificate Manager vs AWS Key Management Service

Overview

AWS Key Management Service

Stacks234

Followers172

Votes14

AWS Certificate Manager

Stacks104

Followers52

Votes0

AWS Certificate Manager vs AWS Key Management Service: What are the differences?

AWS Certificate Manager (ACM) manages SSL/TLS certificates for AWS services and internal resources, while AWS Key Management Service (KMS) simplifies encryption key creation and control for data protection. Let's explore the key differences between them.

Certificate Management vs. Key Management: AWS Certificate Manager (ACM) is a service that provides a managed solution for SSL/TLS certificates. It simplifies the process of obtaining, managing, and deploying certificates for use with AWS services and resources. ACM takes care of the entire certificate lifecycle, including the issuance, renewal, and revocation of certificates. AWS Key Management Service (KMS), on the other hand, is a service that provides secure and scalable key management solutions. It allows users to create and control the encryption keys used to encrypt their data. KMS provides a centralized and secure way to manage keys, and it integrates with various AWS services, which enables seamless encryption and decryption of data.
Certificate Provisioning and Integration: ACM is tightly integrated with other AWS services, making it easier to provision and deploy SSL/TLS certificates. It seamlessly integrates with services like Amazon CloudFront, Elastic Load Balancers (ELBs), and Amazon API Gateway, enabling automatic certificate provisioning and renewal. KMS, on the other hand, is more focused on key management and encryption. While KMS can be used to encrypt and decrypt various types of data, it does not provide the same level of integration with AWS services for certificate provisioning and management.
Certificate Storage and Inventory: ACM manages the storage and inventory of SSL/TLS certificates. It securely stores the certificates and provides a central repository for managing and tracking the certificates issued and deployed within an AWS account. KMS, on the other hand, does not explicitly manage the storage and inventory of certificates. It focuses on managing encryption keys and providing secure key storage. It is up to the users to store and manage the certificates themselves.
Ease of Use and Administration: ACM provides a simplified and user-friendly interface for requesting and managing certificates. It automates many of the complex tasks, such as certificate creation, validation, and renewal, making it easier for users to obtain and deploy SSL/TLS certificates. KMS, while also offering a user-friendly interface, focuses more on advanced key management capabilities. It provides fine-grained access control and auditing features to manage encryption keys securely.
Cost Structure: ACM provides free SSL/TLS certificates for use with AWS services such as Amazon CloudFront and Elastic Load Balancers. However, it does not offer the same free certificate provision for use outside of AWS services. KMS, on the other hand, has a different cost structure. It charges users based on the number of requests made to perform cryptographic operations using KMS-managed keys.
Scope and Use Cases: ACM is primarily used for managing SSL/TLS certificates within the AWS ecosystem. It is designed to simplify certificate provisioning and deployment for use with AWS services and resources. KMS, on the other hand, has a broader scope and can be used for encrypting and decrypting data across various AWS services, as well as for managing keys used in custom applications.

In summary, ACM focuses on managing SSL/TLS certificates and provides seamless integration with AWS services, while KMS is more focused on key management and encryption. Each service has its own specific use cases and strengths within the AWS ecosystem.

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Detailed Comparison

AWS Key Management Service	AWS Certificate Manager
AWS Key Management Service (KMS) is a managed service that makes it easy for you to create and control the encryption keys used to encrypt your data, and uses Hardware Security Modules (HSMs) to protect the security of your keys. AWS Key Management Service is integrated with other AWS services including Amazon EBS, Amazon S3, and Amazon Redshift. AWS Key Management Service is also integrated with AWS CloudTrail to provide you with logs of all key usage to help meet your regulatory and compliance needs.	It removes the time-consuming manual process of purchasing, uploading, and renewing SSL/TLS certificates. With this service, you can quickly request a certificate, deploy it on AWS resources.
Centralized Key Management;Integrated with AWS services;Encryption for all your applications;Built-in Auditing;Fully Managed;Low-cost; Secure	Free public certificates for ACM-integrated services; Managed certificate renewal; Get certificates easily
Statistics
Stacks 234	Stacks 104
Followers 172	Followers 52
Votes 14	Votes 0
Pros & Cons
Pros 6 Integrated with AWS CloudTrail 4 Backed by Amazon 4 KMS 0 Free	No community feedback yet

What are some alternatives to AWS Key Management Service, AWS Certificate Manager?

Let's Encrypt

It is a free, automated, and open certificate authority brought to you by the non-profit Internet Security Research Group (ISRG).

LLMSafe

🔥 Firewall — Risk Detection & Policy Gate; 🧹 Normalize — Sanitize & Rewrite Safely; 📏 Policy Enforcement Layer; 🛡 Data Protection (Inbound & Outbound); 🔎 Response Governance & Output Filtering; 📜 Logging & Audit Trail;

SSL Certificate Lifecycle Management

Discover, provision, rotate and monitor SSL/TLS certificates and keys from a single control plane. Prevent outages, enforce policy, and automate PKI operations at scale.

Ellipticc — Cloud Storage Built for Privacy and Speed

Ellipticc — End-to-end encrypted, post-quantum secure cloud storage for privacy-first users and teams.

Smallstep Certificate Manager

It is built on step-ca that delivers highly available hosted certificate authorities, expiry notifications and alerts, a management dashboard, Active Revocation, API, and other features. With this, you can easily issue private TLS/SSL certificates to all your things.

AI チェッカー

Content True is an enterprise-grade AI detection SaaS platform built to verify the authenticity of written content. While standard detectors struggle with false positives, Content True utilizes a proprietary 100B+ parameter model that analyzes deep linguistic "DNA"—specifically measuring text perplexity and burstiness—to accurately distinguish human writing from models like GPT-4, Claude, and Gemini. It is uniquely optimized for high-context languages (like Japanese) and supports over 50 languages globally. Designed for professionals, the platform operates on a strict zero-data-retention policy, guaranteeing that user submissions are never stored or used to train future AI models. It’s the ultimate verification tool for educators, publishers, and SEO teams who refuse to compromise on privacy and precision.

LocalKeys

LocalKeys is a local-first secret manager for developers. It replaces vulnerable .env files with an AES-256-GCM encrypted vault that works completely offline and requires explicit approval before any process can access your secrets.

Azure Key Vault

Secure key management is essential to protect data in the cloud. Use Azure Key Vault to encrypt keys and small secrets like passwords that use keys stored in hardware security modules (HSMs). For more assurance, import or generate keys in HSMs, and Microsoft processes your keys in FIPS 140-2 Level 2 validated HSMs (hardware and firmware). With Key Vault, Microsoft doesn’t see or extract your keys. Monitor and audit your key use with Azure logging—pipe logs into Azure HDInsight or your security information and event management (SIEM) solution for more analysis and threat detection.

F5

It powers apps from development through their entire life cycle, so our customers can deliver differentiated, high-performing, and secure digital experiences.

OneTrust

A platform to help organizations be more trusted, and operationalize privacy, security, data governance, and compliance programs.

Related Comparisons

AWS Certificate Manager vs AWS Key Management Service: What are the differences?

Certificate Management vs. Key Management: AWS Certificate Manager (ACM) is a service that provides a managed solution for SSL/TLS certificates. It simplifies the process of obtaining, managing, and deploying certificates for use with AWS services and resources. ACM takes care of the entire certificate lifecycle, including the issuance, renewal, and revocation of certificates. AWS Key Management Service (KMS), on the other hand, is a service that provides secure and scalable key management solutions. It allows users to create and control the encryption keys used to encrypt their data. KMS provides a centralized and secure way to manage keys, and it integrates with various AWS services, which enables seamless encryption and decryption of data.
Certificate Provisioning and Integration: ACM is tightly integrated with other AWS services, making it easier to provision and deploy SSL/TLS certificates. It seamlessly integrates with services like Amazon CloudFront, Elastic Load Balancers (ELBs), and Amazon API Gateway, enabling automatic certificate provisioning and renewal. KMS, on the other hand, is more focused on key management and encryption. While KMS can be used to encrypt and decrypt various types of data, it does not provide the same level of integration with AWS services for certificate provisioning and management.
Certificate Storage and Inventory: ACM manages the storage and inventory of SSL/TLS certificates. It securely stores the certificates and provides a central repository for managing and tracking the certificates issued and deployed within an AWS account. KMS, on the other hand, does not explicitly manage the storage and inventory of certificates. It focuses on managing encryption keys and providing secure key storage. It is up to the users to store and manage the certificates themselves.
Ease of Use and Administration: ACM provides a simplified and user-friendly interface for requesting and managing certificates. It automates many of the complex tasks, such as certificate creation, validation, and renewal, making it easier for users to obtain and deploy SSL/TLS certificates. KMS, while also offering a user-friendly interface, focuses more on advanced key management capabilities. It provides fine-grained access control and auditing features to manage encryption keys securely.
Cost Structure: ACM provides free SSL/TLS certificates for use with AWS services such as Amazon CloudFront and Elastic Load Balancers. However, it does not offer the same free certificate provision for use outside of AWS services. KMS, on the other hand, has a different cost structure. It charges users based on the number of requests made to perform cryptographic operations using KMS-managed keys.
Scope and Use Cases: ACM is primarily used for managing SSL/TLS certificates within the AWS ecosystem. It is designed to simplify certificate provisioning and deployment for use with AWS services and resources. KMS, on the other hand, has a broader scope and can be used for encrypting and decrypting data across various AWS services, as well as for managing keys used in custom applications.

AWS Certificate Manager vs AWS Key Management Service

Overview