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Head-to-head · Schema Registry Software

AWS Glue Schema Registry vs Buf Schema Registry

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score AWS Glue Schema Registry #2 in Schema Registry Software 9.3/10 Free plan Free plan✓ 0 of 2 features Visit AWS Glue
Buf Schema Registry #6 in Schema Registry Software 8.6/10 Free plan · 30-day trial Free planFree trial✓ 1 of 2 features Visit site

AWS Glue Schema Registry leads on 0 checks, Buf Schema Registry on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAWS Glue Schema Registry · 9.3/10
  • Free planboth
  • Free trialonly Buf Schema Registry
  • Most featuresBuf Schema Registry · 1 of 2

AWS Glue Schema Registry scores higher on our rubric for schema registry software: 9.3 against 8.6 out of 10; our editors rank them #2 and #6.

On validation scope, Buf Schema Registry gives you Api where AWS Glue Schema Registry offers Event. On deployment options, Buf Schema Registry gives you Hybrid where AWS Glue Schema Registry offers Cloud.

AWS Glue Schema Registry is the better fit for AWS-native streaming teams. Buf Schema Registry is the better fit for protobuf teams needing CI governance.

  • AWS Glue Schema Registry fits best

    AWS-native streaming teams

  • Buf Schema Registry fits best

    Protobuf teams needing CI governance

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Side by side

Feature AWS Glue Schema Registry 9.3/10 Visit ↗ Buf Schema Registry 8.6/10 Visit ↗
At a glance
Editor score 9.3 8.6
Ranking #2 in Schema Registry Software #6 in Schema Registry Software
Best for AWS-native streaming teams Protobuf teams needing CI governance
Pricing model Free Free plan + paid
Starting price Free $0.50/unit/mo
Free plan ✓ ✓
Free trial — 30 days
Deployment Cloud Cloud, Self-hosted
Platforms Web Web
Support Docs Email, Community, Docs
Integrations 7 integrations 2 integrations
Built for Enterprise Small business, Mid-market, Enterprise
Features AWS Glue Schema Registry 0/2 · Buf Schema Registry 1/2
Approval workflows Not checked yet ✓ (best)
Git synchronization Not checked yet —
Specs
Schema formats Avro, JSON Schema, Protocol Buffers (Protobuf) Protobuf
Compatibility modes NONE, DISABLED, BACKWARD, BACKWARD_ALL, FORWARD, FORWARD_ALL, FULL, FULL_ALL FILE, PACKAGE, WIRE, WIRE_JSON
Validation scope Event Api
Deployment options Cloud Hybrid
Our review
Pros
  • No additional charge for registry usage
  • Supports Avro, JSON Schema, and Protocol Buffers
  • IAM, TLS, and KMS encryption support
  • Versioned Protobuf registry with pinned dependency management
  • Linting, breaking-change policies, and approval reviews
  • Generated SDKs, documentation, plugins, and CI/CD publishing
Cons
  • Cloud deployment limits portability
  • Strongest fit is within the AWS ecosystem
  • Advanced schema governance depends on AWS services
  • Focused on Protobuf rather than multiple schema formats
  • Usage-based billing applies to Teams and Pro plans
  • Advanced isolation and dedicated support require Enterprise
Our verdict

AWS Glue Schema Registry is a serverless, managed registry for teams that need to register, version, validate, and govern schemas in streaming applications. It supports Avro, JSON Schema, and Protocol Buffers, with compatibility rules for…

Read the review →

Buf Schema Registry is a hosted registry for teams that publish, version, document, and consume Protobuf API schemas. It stores Buf modules, resolves dependencies, generates SDKs and documentation, hosts remote Protobuf plugins, and runs…

Read the review →
  1. AWS Glue Schema RegistrySchema Registry Software 9.3Free plan
  2. Buf Schema RegistrySchema Registry Software 8.6Free plan · 30-day trial

Strengths and trade-offs

  • AWS Glue Schema Registry — where it wins

    • No additional charge for registry usage
    • Supports Avro, JSON Schema, and Protocol Buffers
    • IAM, TLS, and KMS encryption support

    Where it doesn't

    • Cloud deployment limits portability
    • Strongest fit is within the AWS ecosystem
    • Advanced schema governance depends on AWS services

  • Buf Schema Registry — where it wins

    • Versioned Protobuf registry with pinned dependency management
    • Linting, breaking-change policies, and approval reviews
    • Generated SDKs, documentation, plugins, and CI/CD publishing

    Where it doesn't

    • Focused on Protobuf rather than multiple schema formats
    • Usage-based billing applies to Teams and Pro plans
    • Advanced isolation and dedicated support require Enterprise
  • AWS Glue Schema Registry9.3/10 · Free plan

    A free AWS-native registry for schema control across major streaming services.

    Visit AWS GlueFull verdict →
  • Buf Schema Registry8.6/10 · Free plan · 30-day trial

    A focused Protobuf registry with CI governance, dependency management, and generated SDKs.

    Visit siteFull verdict →

More comparisons

All schema registry software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update