In Pega 8.5, all new applications use React-based landing pages by default. In applications that are built on earlier Pega Platform versions, you enable React-based landing pages manually. When you enable Cosmos React UI for landing pages, the application takes on a hybrid architecture, in which most components retain the classic server-side rendering, but the portal authoring uses the updated client-side technology.

1. In the header of Dev Studio, click the name of the application, and then click Definition.

2. Expand the Advanced section, and click Server rendered UI, and then click Save.

   Result: You can now build React-based landing pages in the application.

• Creating a landing page for an application
• Editing a custom page in a portal
• Configuring tables on landing pages
• Removing a landing page from an application