Developing an Application

Web and Mobile Modules

Web and Mobile modules are the place to implement the UI interface that support a specific user process, such as UI flows, Screens and Blocks. You can also implement the logic directly related with that user process.

Extension Modules

Extension modules allow you to integrate with enterprise systems and to extend the existing functionality and data model of OutSystems. Learn more on how to extend logic with your own code.

Service Modules

Service modules enforce the separation of concerns and encapsulation of core services that can be reused by several applications, abstracting either business concepts or business-agnostic services that extend the framework.

See Also

• Create Your First Web App
• Create Your First Mobile App

• Use Data

  Find information on how to define your data model, query the database and manipulate query results.

  Featured Articles:

  • Data Modeling
  • Query Data
  • Bootstrap an Entitiy Using an Excel File

  See More

• Design UI

  In this section, you can find information regarding how to define the navigation and user interface of your applications (CSS, Layout, Images), and how to gather and validate input from users.

  Featured Articles:

  • Screen
  • Inputs
  • Forms

  See More

• Implement Application Logic

  Learn more about implementing and reuse actions, iterating lists, and handling exceptions. Find more about the lifecycle of screens and blocks.

  Featured Articles:

  • Actions in Mobile Apps
  • Actions in Web Applications
  • Screen and Block Lifecycle Events

  See More

• Use Processes

  Featured Articles:

  • Processes
  • Create a Process Flow
  • Use Callback Actions

  See More

• Use Timers

  Learn how to use Timers to execute asynchronous logic.

  Featured Articles:

  • Create and Run Timers
  • Monitor Timers

• Reuse and Refactor

  Reuse functionality from other modules to avoid repeated code and to achieve a modular design.

  Featured Articles:

  • Use Actions to Encapsulate Logic
  • Expose and Reuse Functionality Between Modules
  • Handle Changes in Exposed Functionality

  See More

• Secure the Application

  Learn how to define the security model for your applications. Use roles and permissions management to restrict access to application screens, interface elements and operations by its end-users.

  Featured Articles:

  • End-User Management
  • User Roles
  • Restrict Access to an Internal Network

  See More

• Troubleshooting Applications

  Learn how to troubleshoot and debug your applications.

  Featured Articles:

  • Debugging Applications
  • Log Information in Action Flows
  • Troubleshoot Service Actions Using Logs

  See More

• Merge the Work

  Integrate other developers' changes into your module by using the merge feature. It works with both visual and textual elements.

  Featured Articles:

  • The merge feature and team collaboration
  • Compare and merge example

Articles in this Section

• Application Templates

  You create OutSystems applications that have user interface from Application Templates. This sets up a theme, CSS, layouts and related placeholders, even larger elements like components for complex logic.

• Service Studio Shortcuts