Customer Stories / Real Estate

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CoStar Group Delivers Efficient Content Moderation and Image Processing for Commercial Real Estate Using AWS

CoStar Group (CoStar) has positioned itself to be a leader in the growing real estate sector and continues to expand using AWS Content Moderation and Amazon Rekognition.

Mark Osborn, principal software engineer at CoStar, discusses how the company CoStar uses Amazon Web Services (AWS) to automatically moderate images and videos. Mark explains how CoStar uploads around 150,000 images and videos to its platform daily and must also confirm that they are appropriate. Because manual analysis is not feasible, CoStar now uses Amazon Rekognition Content Moderation API to build a solution that automatically analyzes uploaded images and videos and ensures the highest quality and compliance of its data. It provides mass scanning, imagery classification, and detects unwanted or toxic content in images with text—saving time, increasing productivity, and reducing infrastructure costs.

“Amazon Rekognition offers a suite of pre-trained computer vision APIs, which along with content moderation, text detection, and object detection, help us further improve our product offerings by making the images we receive more discoverable and our community more inclusive,” says Mark.


Amazon Rekognition allows us to move quickly and add AI smarts to our systems with its pretrained models, helping us stay focused on delivering unique solutions to the real estate sector.”

Mark Osborn
Principal Software Engineer, CoStar Group

About CoStar Group

CoStar Group is a leading company in commercial real estate information, analytics, and technology.

AWS Services Used

Amazon Rekognition

Amazon Rekognition offers pre-trained and customizable computer vision (CV) capabilities to extract information and insights from your images and videos.

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Amazon Personalize

Amazon Personalize allows developers to quickly build and deploy curated recommendations and intelligent user segmentation at scale using machine learning (ML). Because Amazon Personalize can be tailored to your individual needs, you can deliver the right customer experience at the right time and in the right place.

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Amazon SageMaker

Build, train, and deploy machine learning (ML) models for any use case with fully managed infrastructure, tools, and workflows.

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AWS Fargate

AWS Fargate is a serverless, pay-as-you-go compute engine that lets you focus on building applications without managing servers.

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