Zillow enhances home valuation accuracy and scalability using Amazon Kinesis, Apache Spark on Amazon EMR, and Amazon S3. By leveraging AWS, Zestimate computations have shifted from taking a day to completing in seconds, providing near-real-time home-value estimates for 100+ million homes. Amazon Kinesis streams real estate data, while Spark on EMR enables parallel machine-learning processing, improving speed and accuracy. Zillow also uses Amazon S3 as a scalable data lake for personalization, ad targeting, and analytics. AWS allows effortless scaling, ensuring faster, more reliable real estate insights for buyers and sellers.

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