Adobe Commerce Cloud in 2026: PaaS vs SaaS vs On-Premises

Key takeaways

• Adobe Commerce Cloud now refers to several deployment options rather than one single hosting model.
• Adobe Commerce on Cloud is a PaaS model where Adobe manages infrastructure while the merchant or implementation partner remains responsible for application code, extensions, and platform upgrades.
• Adobe Commerce as a Cloud Service follows a SaaS model in which Adobe also manages the application layer and delivers upgrades automatically.
• Adobe Commerce Optimizer can modernize the storefront, catalog, and merchandising layer while allowing an organization to retain its existing commerce backend.
• The biggest architectural decision is not simply cloud versus on-premises, but who should own infrastructure, application upgrades, custom code, and release management.
• PaaS remains the stronger fit when a business requires substantial custom code and wants to control its own development and release process.
• SaaS is better aligned with organizations that want to eliminate major upgrade projects and can work within an API-first customization model.
• On-premises deployment remains relevant when strict infrastructure control, specialized compliance requirements, or unusual hosting constraints outweigh the benefits of managed cloud infrastructure.
• Adobe Commerce Cloud licensing should be evaluated together with development, integrations, extensions, upgrades, and operating-team costs rather than as an isolated platform fee.
• Upgrade discipline remains essential for PaaS deployments because merchants continue to own platform versions even though Adobe manages the underlying infrastructure.

When this applies

This applies when a mid-market or enterprise merchant has already selected Adobe Commerce or is evaluating which Adobe Commerce deployment model best matches its technical and operational requirements. It is particularly relevant for businesses with significant custom functionality, B2B workflows, ERP integrations, large catalogs, complex release processes, or teams deciding whether they want to continue owning application upgrades. The framework is also useful when comparing Adobe Commerce on Cloud with the newer Cloud Service model or deciding whether Adobe Commerce Optimizer can modernize an existing storefront without replacing the backend.

When this does not apply

This does not apply when a business has not yet determined whether Adobe Commerce itself is the right ecommerce platform. In that situation, platform selection should come before deployment-model selection. It may also be unnecessarily complex for smaller merchants with straightforward requirements that can be handled more efficiently by a packaged SaaS platform. Organizations expecting Adobe Commerce on Cloud to eliminate application maintenance entirely should also reconsider the model, because PaaS customers still remain responsible for code, extensions, upgrades, and release quality.

Checklist

1. Confirm that Adobe Commerce is the right platform before selecting a deployment model.
2. Decide whether the organization wants to own application code and platform upgrades.
3. Inventory all custom modules and extensions that must survive the move.
4. Identify whether API-only customization would satisfy future business requirements.
5. Compare PaaS, SaaS, Optimizer, and on-premises against the same requirements.
6. Document ERP, PIM, OMS, CRM, payment, and other integration dependencies.
7. Define who will own application releases and deployment governance.
8. Review the current Adobe Commerce version and remaining support lifecycle.
9. Build an upgrade roadmap if choosing or remaining on the PaaS model.
10. Estimate platform licensing together with implementation and operating costs.
11. Include extension maintenance and custom-code upgrades in the TCO model.
12. Determine whether storefront performance problems could be addressed through Optimizer or a frontend modernization.
13. Verify security, compliance, and infrastructure-control requirements before choosing SaaS or managed cloud.
14. Model the internal and partner engineering capacity required for each deployment option.
15. Select the model based on ownership, customization, upgrade risk, and long-term operating fit rather than the word “cloud” alone.

Common pitfalls

• Treating Adobe Commerce Cloud and Adobe Commerce as a Cloud Service as the same product.
• Assuming PaaS means Adobe manages application upgrades and custom code.
• Choosing SaaS without verifying whether API-based customization can support required workflows.
• Selecting PaaS for extensive flexibility without budgeting for ongoing upgrade projects.
• Moving to on-premises infrastructure without a clear compliance or control requirement.
• Comparing deployment options only by license price instead of total cost of ownership.
• Ignoring extension compatibility and custom-code effort when planning upgrades.
• Allowing supported-version deadlines to become emergency migration projects.
• Choosing Optimizer as though it replaces the entire Adobe Commerce backend.
• Selecting a deployment model before deciding who should own infrastructure, application maintenance, releases, and technical risk.