Exam Overview, Logistics, and Study Strategy

OutSystems Certified Associate Developer Reactive Web Apps

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1 Introduction & Exam Overview

Exam Overview, Logistics, and Study Strategy

2 Chapter 2 — OutSystems Platform and Reactive App Fundamentals

OutSystems Platform Architecture, Service Studio, and Development Tools Client Variables and State Management Screen Lifecycle Events: OnInitialize, OnReady, OnParametersChanged Debugging and Monitoring with the Service Studio Debugger and Service Center

3 Data Modeling

Entities, Attributes, Data Types, and Identifiers Static Entities and Structures Data Relationships, Foreign Keys, and Referential Integrity

4 Chapter 4: Fetching Data

4.1 Aggregates: Filters, Sorting, and Max Records 4.2 Aggregates: Joins, Group By, and Computed Attributes 4.3 Fetching Data on Screens with Data Actions, Caching, and RefreshData 4.4 SQL Queries and External Integrations: REST and SOAP Consumption

5 Logic Flows and Actions

Client Actions, Server Actions, and Action Parameters Logic Flow Control: If, Switch, For Each, and Assign Form Validations: Mandatory, Email Type, and Form.Valid

6 Chapter 6: Error Handling and Advanced Logic

Exception Handling: Exception Handlers, Raise Exception, System vs User Exceptions, AbortTransaction Timers, BPT Processes, Human Activities, and Built-in Functions

7 UI Design: Screen Widgets

Core Screen Widgets: Screen, Container, Expression, If, Link, and Button Forms, Input Widgets, Data Binding, and Feedback Messages List Widget, Pagination, and Screen Navigation Themes, CSS Styling, OutSystems UI, and UI Patterns (Popup/Modal)

8 UI Design: Blocks and Events

Blocks: Creating Reusable UI Components with Input Parameters and Local Variables Block Events and Parent-Screen Communication

9 Architecture, Security, and Lifecycle

Modular Dependencies, Public/Private Elements, and Layered Architecture Role-based Security: Roles, Accessible By, CheckRole, GrantRole, Anonymous Application Lifecycle: 1-Click Publish, LifeTime, Environments, and Versioning

Exam Overview, Logistics, and Study Strategy

Key Takeaways Explain This Topic AI

The OutSystems Certified Associate Developer (Reactive Web Apps) exam has 50 multiple-choice questions, 120 minutes, and requires 70% (35 correct) to pass.

Six official domains are weighted: UI Design 26%, Logic 22%, Fetching Data 20%, Data Modeling 12%, Reactive Apps 12%, and Architecture & Security 8%.

The exam targets OutSystems 11 (O11) Reactive Web Apps specifically, not Traditional Web or the newer OutSystems Developer Cloud (ODC).

No prerequisites are required and the fee is approximately $200 USD; the exam is available in English, Spanish, Japanese, Korean, and Brazilian Portuguese.

The certification path is Associate Developer followed by Professional Developer and then Expert, with each level building on the previous one.

Last updated: July 2026

Quick Answer: The OutSystems Certified Associate Developer (Reactive Web Apps) exam is a 50-question, 120-minute, multiple-choice test that requires 70% (35 correct answers) to pass, costs roughly $200 USD, and has no prerequisites. It targets the OutSystems 11 (O11) Reactive Web App platform and covers six official domains, with UI Design (26%) and Logic (22%) accounting for nearly half of all questions.

What Is OutSystems and What Does This Exam Cover?

OutSystems is a model-driven, low-code application platform that lets developers build enterprise-grade web and mobile applications visually, using a drag-and-drop IDE called Service Studio rather than hand-writing boilerplate code. The platform generates the underlying code, manages the database schema, handles deployment, and provides a runtime that executes the application logic. The Associate Developer certification validates that a candidate understands the core concepts needed to build Reactive Web Apps on OutSystems 11 (O11).

It is important to distinguish the three application models in the OutSystems ecosystem. Reactive Web Apps (the focus of this exam) run primarily in the browser using client-side rendering, with data fetched from the server on demand. Traditional Web Apps are the older server-rendered model where a Preparation action runs server-side before each screen loads and Ajax Refresh partially updates content; Traditional Web concepts appear in the exam only as comparison points. OutSystems Developer Cloud (ODC) is the next-generation platform with a different architecture (Apps vs Modules, ODC Studio, Service Actions); ODC is background context for this exam, not the primary focus. The certification path progresses through three levels: Associate Developer (this exam), then Professional Developer , and finally Expert . Each level assumes mastery of the prior one, and the Associate exam has no prerequisites — you can register directly.

Exam Logistics at a Glance

• Attribute Detail
• Number of questions 50 multiple-choice
• Time limit 120 minutes
• Passing score 70% (35 of 50 correct)
• Fee Approximately $200 USD
• Prerequisites None
• Available languages English, Español, 日本語, 한국어, Português (BR)
• Delivery Online proctored or in-person at Pearson VUE centers
• Exam code focus OutSystems 11 (O11) Reactive Web Apps

The 120-minute window gives you roughly 2.4 minutes per question, comfortable for multiple-choice items if you have studied the material. There is no penalty for incorrect answers, so never leave a question blank — eliminate the clearly wrong options and make your best guess. The exam is proctored, so prepare a quiet, clutter-free workspace and have a government-issued photo ID ready.