What are spiders? How do they help build Googles index of the web?

Spiders, such as Googlebot, visit web pages in search of new data to add to the index. This is critical because Google's business model (attract consumers and sell ad space) is reliant on providing high-quality, relevant, and up-to-date search results. The spiders are pretty smart, too

your answer is confidentiality

amazon is a website were you shop cosmetics such as clothes, electronics and food. amazon also makes there own thechnology such as kindle book readers and tablets or the alexa which is an inteligent ai. and they also have a streaming service which is called prime video.