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Can someone explain the data transfer pricing for the new aws api gateway http offering when connecting to an ec2 back-end.

According to the pricing model aws api pricing it quotes "*HTTP APIs are metered in 512 KB increments." does this include the data trasfer cost if connecting to a ec2 or do you have to effectively count the transaction twice, firstly the data charge from ec2 to api gateway then that data processed by the gateway OR is it a single charge for only data processed by the gateway and therefore not charges between ec2 and the gateway?

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2 Answers

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From a link below, I can say you have to pay for both transfer fee. API gateway not include in free list(only free for internal transfer via internal IP)

https://aws.amazon.com/ec2/pricing/on-demand/

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Data transfer to connect to the EC2 backend is not charged, only data transfers outwards are charged. Ref: https://forums.aws.amazon.com/thread.jspa?messageID=761143