The OutSystems low-code platform helps organizations build, deploy and manage enterprise web and mobile applications faster than traditional coding. It’s used for customer portals, internal business apps, mobile apps and legacy modernization, and it has added AI throughout the development process. This guide explains what OutSystems is, its key features, where it fits, and how it compares with other low-code platforms.
What is OutSystems?
OutSystems is a full-stack low-code platform. Developers visually model the data, user interfaces, business logic and integrations of an application, and the platform generates and deploys the underlying code. Unlike simpler no-code tools, OutSystems targets professional developers building complex, scalable, mission-critical applications.
OutSystems Developer Cloud and Mentor
OutSystems offers two main platform options:
- OutSystems Developer Cloud (ODC): a cloud-native platform built on containers and Kubernetes, designed for scalable, independently deployable apps.
- OutSystems 11 (O11): the long-established platform, still widely used and available in cloud or self-managed options.
Mentor, OutSystems’ AI assistant, can generate applications from requirements, review code quality and suggest improvements. OutSystems has also extended its platform to building agentic apps, where AI agents run within governed applications.
Key features of OutSystems
- Visual full-stack development: data models, UI, logic and APIs in one environment.
- Web and mobile: responsive web apps and native-like mobile apps from the same platform.
- Integration: REST and SOAP APIs, databases, SAP and other enterprise systems.
- Extensibility: add custom code (for example C# or JavaScript) when needed.
- DevOps built in: one-click deployment across environments, dependency checks and monitoring.
- Security and governance: role-based access, security scanning and audit capabilities.
- AI-assisted development: app generation and code review through Mentor.
Common OutSystems use cases
- Customer and partner portals
- Mobile apps for field workers and customers
- Replacing legacy and spreadsheet-based applications
- Core system extensions without modifying the core
- Insurance, banking and healthcare workflows. See low-code for insurance.
Pros and cons of OutSystems
| Pros | Cons |
|---|---|
| Builds complex, scalable enterprise apps | Licensing can be expensive at scale |
| Strong mobile capabilities | Requires trained developers for complex work |
| Built-in DevOps and governance | Apps are tied to the platform |
| AI-assisted development with Mentor | Migration from O11 to ODC requires planning |
OutSystems vs. other low-code platforms
- OutSystems vs. Mendix: both target enterprise apps; see our detailed Mendix vs. OutSystems comparison.
- OutSystems vs. Appian: Appian focuses on process automation and case management; OutSystems focuses on broader custom application development.
- OutSystems vs. Power Apps: Power Apps suits Microsoft-centric departmental apps; OutSystems suits complex, customer-facing and large-scale apps.
For a broader overview, read what low-code and no-code platforms are.
How to succeed with OutSystems
- Start with a well-defined, high-value application.
- Design a reusable architecture of modules and libraries from the start.
- Set up governance: standards, code reviews and a center of excellence.
- Plan integrations and data ownership early.
- Train internal developers alongside your implementation partner.
How Scadea helps
Scadea builds and modernizes enterprise applications on OutSystems and other low-code platforms, from first app to center of excellence. Learn more about our low-code application development services and application modernization.
Frequently asked questions
Is OutSystems low-code or no-code?
Low-code. It’s designed for developers and supports custom code, unlike no-code tools aimed at business users.
What is the difference between ODC and O11?
ODC is OutSystems’ cloud-native platform built on containers and Kubernetes. O11 is the established platform. New projects often start on ODC, while many existing apps run on O11.
Can OutSystems build mobile apps?
Yes. OutSystems builds mobile apps that can be published to app stores, as well as responsive web apps.
Considering OutSystems or modernizing an existing app? Talk to Scadea’s low-code team.
