Search engine indexing
Faster page loading
Heavy JS code can be a bandwidth leech and slow to download. Waiting for the app/website to bootstrap and conduct initial AJAX queries and render all the downloaded code to DOMs can add additional time to the process. The result is a slow-loading website or app, dissatisfied users, and less revenue. The isomorphic approach helps to solve this type of issue by reducing download times.
Better code maintainability
The code itself is vulnerable. More vulnerability means more work for you and your team to maintain. Because of this, it’s best to avoid having multiple templates and logic for the same page. Thanks to Node.js and other template engines like Handlebars, Mustache, and Dust, it is simple to utilize front-end/browser modules on the backend.
Furthermore, developers can reuse templates and use the same frameworks and utilities in both the server and the browser to cut down on duplication. For this reason, underscore.js, Lodash, Request, and SuperAgent are some of the most used libraries.