Runtime
OutSystems' managed OML runtime is replaced by a standard Spring Boot application you deploy and operate yourself — no platform-imposed scaling limits, no Application Object metering.
OutSystems -> Java/Spring
OutSystems to Java/Spring: what actually changes.
Java/Spring is one of the two most common OutSystems exit targets we see, usually chosen by teams with an existing Java engineering organization. Here's what the conversion actually changes — and what it deliberately preserves.
Draft. Pending Pedro's review before publication — not yet linked from nav, footer, or the OutSystems page — held to the same approval gate as the other new Phase 2/3 pages.
What changes
Runtime, deployment, and how you ship changes.
Deployment
OutSystems' one-click environment promotion is replaced by whatever CI/CD pipeline your team already runs for other Java services — Jenkins, GitHub Actions, GitLab CI, or similar.
Talent pool
Any Java/Spring engineer can maintain the output — a materially larger and cheaper hiring market than OutSystems-certified developers.
What stays the same
Your business logic, your data model, your integrations.
Business rules
Every validation, calculation, and workflow rule in your OML gets extracted and converted — not rewritten from a requirements doc. Behavioral equivalence testing verifies the converted logic matches the live system's actual output.
Entities and integrations
Your entity model converts to JPA/Hibernate entities with equivalent relationships; existing integrations (REST, SOAP, database connections) are re-implemented against the same external contracts, so downstream systems don't need to change.
See it verified
One real migration, full metrics disclosed.
See our case studies page for a complete sample migration with attribute coverage and test results — not a vague claim.
Next step
See what this looks like on your estate.
The Proof of Architecture Diagnostic converts one real OutSystems module to Java/Spring so you can judge the output directly.