Adding Custom Attributes to Magento 2 Quotes and Orders

Magento 2 provides some default attributes that are added to the quote and order item data. Here is how to go about adding custom Attributes to Magento 2 quotes and orders.
If you’ve read Adding Custom Attributes to Quotes and Orders in Magento 1, then the below steps aren’t too dissimilar from adding custom attributes …

Add Category Attributes in Magento 2

Occasionally Magento developers will need to extra attributes to the system. Here we explain how to add category attributes in Magento 2.
If you are familiar with adding attributes to Magento 1, you’ll know that they can be added via install scripts and using a specific resource class. Category attributes are added via the Mage_Catalog_Model_Resource_Setup …