OutSystems apps,
purpose-built from scratch.
OutSystems charges $5K–$15K per app per month and locks every app into the same .NET/Java Platform Server runtime. AI agents analyse your Service Studio logic, rebuild each app with the architecture that fits its purpose, and migrate your data to better-fit stores.
Why enterprise teams are transforming OutSystems apps
OutSystems delivers rapid application development with its visual IDE and one-click deployment. But per-app licensing at $5K–$15K/month means costs escalate as your portfolio grows. Every app runs on the same Platform Server runtime — whether it's a complex insurance workflow or a simple internal tool.
See what the Rebuild Agent produces
OutSystems Service Actions and Screen Aggregates become standard API endpoints and database queries your team can read, test, and extend without Service Studio.
// OutSystems Service Action: SA_CreateOrder
// (Visual flow in Service Studio — no source code)
[Input] → CustomerId, Items[], ShippingAddress
↓
[Aggregate] → GetCustomerById(CustomerId)
↓
[Decision] → Customer.CreditLimit >= OrderTotal?
├─ Yes → [Server Action] CreateOrderRecord
│ ├─ [Create] Order entity
│ ├─ [ForEach] Items → Create OrderLine entities
│ ├─ [Call REST] → InventoryService.Reserve
│ └─ [Assign] Output.OrderId = Order.Id
└─ No → [Raise Exception] "Insufficient credit"
// Locked in Service Studio
// Runs on OutSystems Platform Server (.NET)
// No Git, no unit tests, no CI/CD// src/orders/services/createOrder.ts
// Generated by RebuildAgent — microservice
export async function createOrder(
cmd: CreateOrderCommand,
deps: { db: Database; inventory: InventoryClient }
) {
const customer = await deps.db.customers
.findById(cmd.customerId);
if (customer.creditLimit < cmd.totalAmount) {
throw new InsufficientCreditError(cmd.customerId);
}
const order = await deps.db.transaction(async (tx) => {
const order = await tx.orders.create({
customerId: cmd.customerId,
shippingAddress: cmd.shippingAddress,
status: "pending",
});
await tx.orderLines.createMany(
cmd.items.map(item => ({
orderId: order.id, ...item
}))
);
await deps.inventory.reserve(order.id, cmd.items);
return order;
});
return { orderId: order.id };
}
// Git-tracked · 92% test coverage · SonarQube A
// Runtime: Node.js + Postgres (purpose-fit)Not all apps are equal. We know that.
The Assessment Agent classifies each OutSystems app by complexity. Simple apps are highly automated. Complex apps get architect-guided migration.
Custom .NET extensions built with Integration Studio, deeply coupled Platform Server APIs, and complex BPT processes with external system callbacks require manual review by a migration engineer. The Assessment Agent flags these upfront — no surprises mid-migration.
Same 5-phase agent process
OutSystems transformations follow the same agent-driven process used across all platform exits.
What becomes what
| OutSystems | Purpose-built replacement |
|---|---|
| Reactive Web Apps | React — standard, portable, your team owns the code |
| Service Actions | Node/Go API endpoints with standard REST/GraphQL |
| Server Actions | Business logic services — testable, version-controlled |
| Screen Aggregates | Purpose-fit database queries (Postgres, MongoDB, ClickHouse) |
| Entity models | Standard database schemas — purpose-fit per workload |
| Platform Server (.NET/Java) | Kubernetes on your cloud — no proprietary runtime |
| OutSystems Lifetime (CI/CD) | Argo CD — blue-green, canary, pre-approved pipelines |
| Integration Studio | Standard API integrations — REST, gRPC, message queues |
Start with the Assessment Agent
Let the agent connect to your OutSystems environment and produce a full report — recommended architectures, purpose-fit data stores, and estimated savings per app.