As part of the Super Bowl marketing campaign, Duolingo sent out 4 million mobile push notifications leveraging an asynchronous AWS architecture that catered to delivering notifications precisely during the ad's airing, presenting a unique technical challenge for the team.
Duolingo's presentation at QCon London highlighted the usage of an architecture focusing on the API Gateway, Python components in AWS ECS, and SQS queues, sourcing user data from DynamoDB and S3, and utilizing CloudWatch for monitoring and observability.
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