Hello  @Quinnie 

If your goal is to become a strong Front-End developer in OutSystems, focus more on ODC going forward. O11 is still widely used in projects, but ODC is where modern frontend architecture is moving.

Best path:

Learn both, but prioritize: ODC Reactive Apps HTML/CSS/Flexbox/Grid JavaScript basics REST APIs Client Actions & State Management Responsive UI patterns Performance optimization

Frontend experts in OutSystems are usually the people who can:

• build clean UI/UX,
• customize components,
• understand browser behavior,
• and integrate JS libraries correctly.

For practice:

• Rebuild popular app screens in ODC
• Create reusable UI components
• Learn debugging with browser DevTools

Helpful Quizlet set:

 https://quizlet.com/759717854/front-end-developer-specialist-flash-cards/

Thanks and Regards,
Akshay Deshpande

Hi @Quinnie ,

It is shared exam between the two, you could focus on either, if you are more familiar with O11 you could use that.

You can first go through this: OutSystems Training: Front-end Developer specialization exam | OutSystems .

It depends on whether you just want to get certified or actually work with frontend development.

For certification, OutSystems' content is great and explains all the topics of the exam, with a sample exam.

But if you really want to work with frontend development, I advise you to understand how the platform manages its pages and widgets, events, and how OutSystems UI components are created.

For this, a good foundation in HTML, CSS, and JavaScript will help you, and then using SASS and compilers to organize code will be very helpful.

Well, I think these are the most basic tips; if you want, we can talk more.

Let me know if I helped :)

Hi @Quinnie ,

Try to check the OS UI sites, that will help you get some idea on Front end developer .

Also it is your familiarity that  either you decide 011 or ODC. 

https://outsystemsui.outsystems.com/OutSystemsUIWebsite/

Check the above link for your reference.

hi @Quinnie 

If you want to become a Front-End Expert specifically in OutSystems, focus on these areas: 

• Themes
• Layouts
• UI Patterns
• Blocks and reusable components
• Screen templates
• Styling architecture

Responsive and Mobile Design

Make sure your applications work well on:

• Desktop
• Tablet
• Mobile

Understand breakpoints and responsive behavior in OutSystems.

You can go thr this sites:

https://outsystemsui.outsystems.com/OutSystemsUIWebsite/PatternsOverview9

https://outsystemsui.outsystems.com/OutSystemsUIWebsite/CheatSheet

I hope this helps

Thanks