UI-Kit and Cosmos are two entirely different designs systems.  As with migrating between any design systems, migration is a development effort, and the level of effort depends on the complexity of the application.  To better understand when to migrate, the level of effort, and the Cosmos roadmap, start with this article about our design systems: https://design.pega.com/getting-started-design-system

The attached article provides guidance for migrating your existing Pega application built on UI-Kit to "Cosmos Rules,"  the non-React version of Cosmos available in Pega 8.3 and above.

Topics include:

• Understanding the level of effort
• Overview and steps to configure a development environment for migration
• Approaches and tips for migration
• Migrating and customizing the view of a case with App Studio

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