In Magento 1, if you wanted to insert any block on the home page, you would open theme’s default.xml file and add cms_index_index action and insert block inside a reference tag.
After the release of Magento 2, default.xml is gone. In order to add a block to the home page or any other page, there are many ways.
One way we use is to create a new module. This is how we are going to proceed