Magento Open Source 2.2.x
Switching Home Pages

You can maintain a selection of different home pages, and activate the page that you want to use as the default home pageThe first home page a visitor sees when they access your website URL. Considered the most important page on your website according to search engine indexing..

To Change the Home Page:

1. Complete the steps to add a new page.
2. On the Admin sidebar, tap Stores. Then under Settings, choose Configuration.
3. In the panel on the left under General, choose Web.
4. Expand the Default Pages section. Then, do the following:

Default Pages
a. Set CMS Home Page to the new page.
b. Tap Save Config.
5. In the message at the top of the workspace, tap the Cache Management link, and refresh any invalid caches.