Learn OUTSYSTEMS with Real Code Examples

Updated Nov 26, 2025

Explain

Allows developers to build applications via visual modeling.

Supports full-stack development including front-end, back-end, and database.

Includes tools for workflow automation, integrations, and business logic.

Provides built-in deployment pipelines and DevOps features.

Accelerates enterprise application delivery while reducing manual coding.

Core Features

Reactive Web Apps - modern responsive web apps

Mobile Apps - native and hybrid mobile applications

Integrations - connectors to external systems and APIs

Business Logic - workflows, processes, and rules

Deployment & Monitoring - one-click deployment and analytics

Basic Concepts Overview

Modules - reusable building blocks

Entities - data structures and database tables

Screens - visual UI components

Actions - server-side and client-side logic

Flows - workflows and business processes

Project Structure

Modules/ - individual apps or features

Entities/ - database models

UI/ - screens and templates

Logic/ - actions and workflows

Integrations/ - API connectors and services

Building Workflow

Model database entities

Design screens with drag-and-drop UI

Add server and client actions

Integrate with APIs and external services

Deploy and monitor application lifecycle

Difficulty Use Cases

Beginner: internal dashboards

Intermediate: mobile apps with APIs

Advanced: enterprise workflow automation

Expert: complex integrations with external systems

Architect: multi-module enterprise app with DevOps pipeline

Comparisons

OutSystems vs Mendix: similar low-code platform, OutSystems more enterprise-focused.

OutSystems vs Power Apps: OutSystems offers full-stack dev; Power Apps focuses on Microsoft ecosystem.

OutSystems vs Appian: OutSystems stronger in mobile/web dev flexibility.

OutSystems vs Traditional coding: faster development, less flexibility.

OutSystems vs Salesforce Lightning: OutSystems platform-agnostic; Lightning tied to Salesforce.

Versioning Timeline

2001 - Founded by Paulo Rosado in Portugal

2005 - Early platform releases with rapid dev tools

2010 - Added mobile app support

2015 - Cloud deployment options introduced

2020 - AI-assisted development added

2025 - Current stable enterprise-ready version

Glossary

Module - container for app functionality

Entity - database structure

Screen - user interface page

Action - logic execution unit

Forge - library of reusable components