Are gift cards given by Amazon taxable income?

I’ve applied to Amazon Prime Credit Card by Chase and when I immediately placed an order for something, I was charged just a portion of the price. In the order details, I can see that they applied for a 200 dollar gift card, which was given to me because I signed for the credit card. Is this bonus/gift card a taxable income? 
Also, Amazon gave me courtesy credit in form of a gift card a couple of times (like 5 dollars, 10 dollars). Are those gift cards taxable? 
And if yes, where to report it on Turbotax