Is Amazon an aggregator?

Could you please clarify for me if Amazon can be considered an aggregator in the traditional sense of the term? From my understanding, an aggregator typically compiles and presents information or products from multiple sources in a single, user-friendly interface. While Amazon does offer a vast array of products from various sellers, does its role as a marketplace and fulfillment center truly align with the definition of an aggregator, or is it more accurately described as an e-commerce platform? I'm curious to hear your thoughts on this matter.