Hi Hyun Seo,
At this time, the Atlas Integration with Vercel is a partner integration that makes it easy to get started using an Atlas cluster as the database for one or many projects in Vercel. Especially for new Atlas users, it speeds up the process of creating an account, organization, project, cluster, security setup, a Vercel-specific database user, and then saving the credentials for that users securely in the chosen Vercel project(s).
Best,
Justin