There are lots of questions you might be asking yourself about how to put your store together. This article will be tackling the question of choosing whether you should put a field on your Product Data or your Product Node. The difference is simple, products are more there for inventory (sizes and colors of one kind of shirt) and product nodes are more there for display (here's all the Commerce Guys t-shirts).
This question comes in lots of forms:
The fact is that there are two different places you can add categories and pictures:
1. Nodes or "Product Pages" - Product pages are great for images and/or categories that represent all of that one kind of product. For example, if we had an online shoe website, we would add an "athletic" category to the Nike Jordan product page, but we wouldn't want to add a "size" or "color" to the product page, because those belong in Product variations.
2. Product Variations - These are the specific product listings that include price and "variation categories" like size, color, weight, etc.
In the graphic above we have created a visual of the difference between product pages and product variations. Typically, Product variations include the photo, but if a product's photo won't change based on size or color, then it makes more sense to add that directly to a page.
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