
AWS Data Exchange
6.2#1 in data exchange platformsFree planFree planWebAPI
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It suits data subscribers looking for free or provider-priced data products, and providers who want to publish products or private offers. It can also serve people seeking publicly available Open Data on AWS, whether or not they have an AWS account.
It suits organizations that need to share and analyze data across parties while keeping underlying data in place. Contributors can govern query access, while subscribers can run queries against shared resources.