Best Practices for Power Apps Canvas Apps in 2026
A comprehensive guide with best practices for developing performant, accessible, and maintainable Canvas Apps in Power Apps.
Luciano Ferreira 
Why best practices matter
When developing Canvas Apps in Power Apps, following best practices is not merely a matter of personal preference. It is the difference between an application that scales and is easily maintained and one that becomes a maintenance nightmare.
Consistent naming
Use PascalCase for screens and controls, and prefix variables with var and collections with col. This makes reading and searching through the code much easier.
varSelectedEmployee
colFilteredProjects
HeaderContainer
EmployeeNameLabelLayout with containers
Always use LayoutMode.Auto instead of manual positioning. Containers with auto-layout ensure responsiveness and make future adjustments easier.
Delegation and performance
Understand the delegation limits of your data source. SharePoint and Dataverse support different operations. Use ClearCollect for local caching when necessary and Concurrent() to load data in parallel.
Accessibility
Add AccessibleLabel to all interactive controls. Ensure a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. Touch targets should be at least 44x44px.
Conclusion
Investing time in best practices from the start of a project saves hours of rework in the future. Begin with the most impactful ones and gradually incorporate the rest.