--- title: AWS Key Management Service (KMS) Reviews meta_title: 'AWS Key Management Service (KMS) Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 34 reviews by the users' company size, role or industry to find out how AWS Key Management Service (KMS) works for a business like yours. aggregate_rating: rating_value: 4.4 review_count: 34 scale: '5' date_modified: '2026-10-17' parent_category: name: Data Security url: https://www.g2.com/categories/data-security ---

AWS Key Management Service (KMS) Pros and Cons: Top Advantages and Disadvantages

Quick AI Summary Based on G2 Reviews

Generated from real user reviews

Users appreciate the abundance of services offered by AWS, enhancing their cloud capabilities significantly. (1 mentions)
Users appreciate the extensive range of services offered by AWS KMS, enhancing security and architecture capabilities. (1 mentions)
Users appreciate the robust security features of AWS KMS, enhancing their protection against various cyber threats. (1 mentions)
Users report access issues with AWS KMS, experiencing failures in protection during DDoS attack simulations. (1 mentions)
Users report connectivity issues with AWS KMS, particularly during DDoS attack simulations, impacting resource accessibility. (1 mentions)

Top Pros or Advantages of AWS Key Management Service (KMS)

1. Azure Services
Users appreciate the abundance of services offered by AWS, enhancing their cloud capabilities significantly.
See 1 mentions

See Related User Reviews

Prashant G.
PG

Prashant G.

Small-Business (50 or fewer emp.)

4.0/5

"AWS need improvement in some areas of security"

What do you like about AWS Key Management Service (KMS)?

AWS has good number of services which are best among all Cloud service providers for me like AWS Transist Gateway to support Hub and Spoke architectur

2. Cloud Services
Users appreciate the extensive range of services offered by AWS KMS, enhancing security and architecture capabilities.
See 1 mentions

See Related User Reviews

Prashant G.
PG

Prashant G.

Small-Business (50 or fewer emp.)

4.0/5

"AWS need improvement in some areas of security"

What do you like about AWS Key Management Service (KMS)?

AWS has good number of services which are best among all Cloud service providers for me like AWS Transist Gateway to support Hub and Spoke architectur

3. Security Protection
Users appreciate the robust security features of AWS KMS, enhancing their protection against various cyber threats.
See 1 mentions

See Related User Reviews

Prashant G.
PG

Prashant G.

Small-Business (50 or fewer emp.)

4.0/5

"AWS need improvement in some areas of security"

What do you like about AWS Key Management Service (KMS)?

AWS has good number of services which are best among all Cloud service providers for me like AWS Transist Gateway to support Hub and Spoke architectur

Top Cons or Disadvantages of AWS Key Management Service (KMS)

1. Access Issues
Users report access issues with AWS KMS, experiencing failures in protection during DDoS attack simulations.
See 1 mentions

See Related User Reviews

Prashant G.
PG

Prashant G.

Small-Business (50 or fewer emp.)

4.0/5

"AWS need improvement in some areas of security"

What do you dislike about AWS Key Management Service (KMS)?

AWS Shield advance service needs an improvement to protect from every type of DDoS attacks as it was failed twice to detect DDoS attacks and failed to

2. Connectivity Issues
Users report connectivity issues with AWS KMS, particularly during DDoS attack simulations, impacting resource accessibility.
See 1 mentions

See Related User Reviews

Prashant G.
PG

Prashant G.

Small-Business (50 or fewer emp.)

4.0/5

"AWS need improvement in some areas of security"

What do you dislike about AWS Key Management Service (KMS)?

AWS Shield advance service needs an improvement to protect from every type of DDoS attacks as it was failed twice to detect DDoS attacks and failed to

Top-Rated Alternatives

Vault
Vault
4.3/5(69)
Azure Key Vault
Azure Key Vault
4.5/5(56)
Egnyte
Egnyte
4.4/5(1,175)

AWS Key Management Service (KMS) Reviews FAQs

Generated using AI

Last updated: Nov 04, 2026

What is AWS Key Management Service (KMS), and what problem is it built to solve?

AWS Key Management Service (KMS) centralizes encryption key management for AWS workloads. It helps teams encrypt data and manage key access without handling keys separately across each application.

What company sizes and industries is AWS Key Management Service (KMS) the best fit for?

Positive customer use clusters most around enterprise organizations, with small and mid-market businesses also represented. Software and technology-related work stand out among the industries using it.
  • Company size — Enterprise organizations, alongside small businesses and mid-market teams.
  • Industry — Computer software and technology/security-related industries, with additional use in areas such as retail, financial services, and consulting.

What customer support options does AWS Key Management Service (KMS) provide, and how do users find the overall support experience?

Support is available through email/help desk, a knowledge base, and FAQs or forums. The support experience appears mixed: some users describe helpful assistance, while others indicate that consistency could improve.

Is AWS Key Management Service (KMS) considered safe and secure for handling data?

AWS Key Management Service (KMS) is used to protect sensitive data through centralized key management and encryption. Users also value access controls and key rotation, while some note that configuring key policies and permissions can take time to understand.

AWS Key Management Service (KMS) Reviews (34)

Reviews

AWS Key Management Service (KMS) Reviews (34)

4.4
34 reviews
Search reviews
Filter Reviews
Clear Results
G2 reviews are authentic and verified.
Here's how.
Verified User in Airlines/Aviation
CA
Verified User in Airlines/Aviation
Enterprise (> 1000 emp.)
"KMS could be best solution to Data encryption and decryption"
3/5
What do you like best about AWS Key Management Service (KMS)?

I like the Master key and Data key concept in KMS. this is very easy to implement and I like AWS UI to manage it. Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

AWS should have been provided more c# samples to use all its features. Review collected by and hosted on G2.com.

Gabriela R.
GR
Gabriela R.
Directora de artes
Small-Business (50 or fewer emp.)
"It's a really easy way to centrally manage your keys"
3.5/5
What do you like best about AWS Key Management Service (KMS)?

The key rotation does not need to decrypt and re-encrypt the data that was encrypted by the key. Old keys are still available to decrypt the data and the newly encrypted data will use new keys. It has automatic key rotation that is essential for compliance purposes. It does not require configuration to start. Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

KMS gives an easy rotation but you do not have much control. AWS will rotate it for you according to your own schedule annually. You can not force it. In addition, if you import your own keys, you must manage this key rotation on your own, which overrides the nice rotation service provided by AWS and, you must decrypt and re-encrypt the data encrypted with those keys. So keep this in mind if you are thinking about using your own keys. Review collected by and hosted on G2.com.

Utkarsh S.
US
Utkarsh S.
Leaders in Innovation Fellow
Public Policy
Small-Business (50 or fewer emp.)
"KMS - Simple, secure and powerful"
4/5
What do you like best about AWS Key Management Service (KMS)?

The ability to securely store keys and use them for encrypting apps and storage is unarguably the best feature of the AWS KMS. Within the AWS ecosystem the integration and interoperability is remarkable. Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

Nothing that I can think of, the service is really straight forward and easy to use. Review collected by and hosted on G2.com.

Verified User in Computer Software
UC
Verified User in Computer Software
Small-Business (50 or fewer emp.)
"Easy, AWS hosted security"
5/5
What do you like best about AWS Key Management Service (KMS)?

Easy way to store your key pairs for use on EC2, Lambda, and a large amount of other assorted AWS services for almost no charge. Keeping track of keys on premise is dangerous and risky, because it gives another system that you need to protect in order for your infrastructure to remain safe. Through KMS, you can store all the keys that you need in AWS itself and therefore extend your security blanket to your keys as well. Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

Not much. The UI and AWS console is not very intuitive and can be confusing at times. I would really like to see a redesign of the UI from AWS as it is needlessly complicated and incredibly slow for a select number of operations. Review collected by and hosted on G2.com.

Verified User in Computer & Network Security
AC
Verified User in Computer & Network Security
Enterprise (> 1000 emp.)
"KMS"
3.5/5
What do you like best about AWS Key Management Service (KMS)?

I love the fact that we keep all of our keys in one place, and they're easily reachable via most of our internal systems on an encrypted level. Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

I dislike the pricing schema for it. Charging on a per key model is simple, but illogical for larger companies to use. We have thousands of keys that we'd like to live inside of the system, but it's too expensive to justify. Review collected by and hosted on G2.com.

SQ
safdar q.
Sr Cloud hosting and sytem engineer
Mid-Market (51-1000 emp.)
Business partner of the seller or seller's competitor, not included in G2 scores.
"helps in different key management system"
5/5
What do you like best about AWS Key Management Service (KMS)?

we have multiple products and for those can use different kms keys or share it depending upon environment Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

I was able to create two kms with same name. had to delete one of those before i could proceed with using the right one. Review collected by and hosted on G2.com.

Verified User in Retail
AR
Verified User in Retail
Enterprise (> 1000 emp.)
"KMS Review"
5/5
What do you like best about AWS Key Management Service (KMS)?

I love how easy it is to work with encryption keys. I love that metadata is saved with the key so there is not much information that is required to perform a decryption operation Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

I don't like that root is preprovisioned in the kms key policy. I understand why but I feel like enabling iam access is something that should be done explicitly by the admin and not a default. Review collected by and hosted on G2.com.

GD
Gourav D.
MS Student
Enterprise (> 1000 emp.)
"Great For Keeping Application Safe"
5/5
What do you like best about AWS Key Management Service (KMS)?

-Easy to plug into application using AWS sdk

-Support for nearly All OS

-Good key rotation policy

-Lot of big and secure Applications trust KMS Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

-Default key rotation policy is not ideal

-Could look confusing at first usage

-AWS UI is still for power user, newbies could struggle Review collected by and hosted on G2.com.

Verified User in Security and Investigations
US
Verified User in Security and Investigations
Mid-Market (51-1000 emp.)
"key management service"
4/5
What do you like best about AWS Key Management Service (KMS)?

simple to use and integrate with your application flow Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

more technical documentation explaining more on the hsm part Review collected by and hosted on G2.com.

DL
Daniel L.
Senior Software Developer
Enterprise (> 1000 emp.)
"Security"
4/5
What do you like best about AWS Key Management Service (KMS)?

When you need a good private key to secure your data, you've got it! Review collected by and hosted on G2.com.

What do you dislike about AWS Key Management Service (KMS)?

A little hard to use at first. But in the end I figured it out. Review collected by and hosted on G2.com.

Work at Amazon Web Services (AWS)?

Claim this profile to respond to reviews, update product info, and reach in-market buyers.

Claim this profile
Categories on G2
Explore More