The key is 100% boycotting all services provided by a company. Wikipedia’s list of Amazon product/services as reference (https://en.wikipedia.org/wiki/List_of_Amazon_products_and_services).
Incidentally, I know entire neighborhoods that don’t have other grocery stores besides Target/Whole Foods, not to mention that AWS is the cloud computing industry standard… As a personal example, my vet-prescribed cat foods are manufactured by Purina, a subsidary of Nestlé (needless to say, a separate but also extremely evil large corporation)
If you want to read the story of someone’s experience trying to block all the big tech companies from their life back in 2019. Their first week was trying to block Amazon.
Edit: A big challenge would be if you wanted to avoid connecting to sites that run off of or have content served by AmazonWebServices. To do that for example, you’d have to click these archive links for Gizmodo instead of the direct links I did above.
archive ver for link 1
archive ver for link 2