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Adyen vs Square

Side-by-side comparison of Adyen and Square. Data-driven analysis for CTOs and engineering leaders.

Technical Profile

Adyen

Scalability
very high
Performance
very high
Learning Curve
moderate
Maturity
mature
Languages: REST API, SDKs

Square

Scalability
very high
Performance
high
Learning Curve
easy
Maturity
mature
Languages: REST API, SDKs

When to Use

Adyen

  • +Global business
  • +Omnichannel needs
  • +Enterprise scale

Avoid Adyen when

  • -Small business
  • -Simple payments
  • -Low volume

Square

  • +In-person + online
  • +SMB
  • +Quick setup
  • +US market

Avoid Square when

  • -Developer-first
  • -Global coverage
  • -Custom flows

Compliance & Security

Adyen

SOC 2GDPRHIPAAPCI-DSS

Security Features

EncryptionAudit LogsRBACMFA

Square

SOC 2GDPRHIPAAPCI-DSS

Security Features

EncryptionAudit LogsRBACMFA

Operations

Adyen

Maintenance
low
Monitoring
low
Backup/Recovery
simple
Hosting: managed

Square

Maintenance
low
Monitoring
low
Backup/Recovery
simple
Hosting: managed

Frequently Asked Questions

How does scalability compare between Adyen and Square?

Adyen offers very-high scalability, while Square offers very-high scalability. Consider your expected traffic and data volume when choosing.

Which has the easier learning curve: Adyen or Square?

Adyen has a moderate learning curve, while Square has a easy learning curve. Factor in your team's existing skills and onboarding timeline.

What are the pricing differences between Adyen and Square?

Adyen uses a usage-based pricing model starting at €0.10 + variable. Square uses a usage-based pricing model starting at 2.6% + $0.10. Evaluate total cost of ownership including operational overhead.

Which option is better for compliance: Adyen or Square?

Adyen supports SOC 2, GDPR, PCI-DSS. Square supports SOC 2, GDPR, PCI-DSS. Always verify current certifications directly with the vendor.

Need help deciding between Adyen vs Square?

Use our interactive decision tool for a personalized recommendation.

Adyen vs Square — CTO Technology Comparison | The Art of CTO