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Auth0 vs AWS Key Management Service: What are the differences?
What is Auth0? Token-based Single Sign On for your Apps and APIs with social, databases and enterprise identities. A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
What is AWS Key Management Service? Easily create and control the encryption keys used to encrypt your data. 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.
Auth0 can be classified as a tool in the "User Management and Authentication" category, while AWS Key Management Service is grouped under "Data Security Services".
Some of the features offered by Auth0 are:
- User and Password support with verification and forgot password email workflow
- Painless SAML Auth with Enterprises
- Integration with 20+ Social Providers
On the other hand, AWS Key Management Service provides the following key features:
- Centralized Key Management
- Integrated with AWS services
- Encryption for all your applications
"JSON web token" is the primary reason why developers consider Auth0 over the competitors, whereas "Integrated with AWS CloudTrail" was stated as the key factor in picking AWS Key Management Service.
According to the StackShare community, Auth0 has a broader approval, being mentioned in 121 company stacks & 53 developers stacks; compared to AWS Key Management Service, which is listed in 27 company stacks and 5 developer stacks.
Currently, Passport.js repo has 324 open issues, and Jared (the original author) seems to be the one doing most of the work. Also, given that the documentation is not proper. Is it worth using Passport.js?
As of now, StackShare shows it has 29 companies using it. How do you implement auth in your project or your company? Are there any good alternatives to Passport.js? Should I implement auth from scratch?

I would recommend Auth0 only if you are willing to shell out money. You can keep up with their free version only for a very limited time and as per our experience as a growing startup where budget is an issue, their support was not very helpful as they first asked us to sign a commercial agreement even before helping us t o find out whether Auth0 fits our use case or not! But otherwise Auth0 is a great platform to speed up authentication. In our case we had to move to alternatives like Casbin for multi-tenant authorization!
I started our team on Amazon Cognito because I was a Solutions Architect at AWS and found it really easy to follow the tutorials and get a basic app up and running with it.
When our team started working with it, they very quickly became frustrated because of the poor documentation. After 4 days of trying to get all the basic passwordless auth working, our lead engineer made the decision to abandon it and try Auth0... and managed to get everything implemented in 4 hours.
The consensus was that Cognito just isn't mature enough or well-documented, and that the implementation does not cater for real world use cases the way that it should. I believe Amplify has made some of this simpler, but I would still recommend Auth0 as it's been bulletproof for us, and is a sensible price.
Pros of Auth0
- JSON web token70
- Integration with 20+ Social Providers31
- SDKs20
- It's a universal solution20
- Amazing Documentation15
- Heroku Add-on11
- Enterprise support8
- Extend platform with "rules"7
- Great Sample Repos7
- Azure Add-on4
- Easy integration, non-intrusive identity provider3
- Passwordless3
- It can integrate seamlessly with firebase2
- Great documentation, samples, UX and Angular support2
- Polished2
- On-premise deployment2
- Will sign BAA for HIPAA-compliance1
- MFA1
- Active Directory support1
- Springboot1
- SOC21
- SAML Support1
- Great support1
- OpenID Connect (OIDC) Support1
Pros of AWS Key Management Service
- Integrated with AWS CloudTrail5
- KMS4
- Backed by Amazon4
- Free0
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Cons of Auth0
- Pricing too high (Developer Pro)14
- Poor support7
- Status page not reflect actual status4
- Rapidly changing API3