AWS Lambda - Logic in the Cloud without Back-end
summary
AWS Lambda runs code behind API Gateway, S3, DynamoDB and IoT endpoints so a single‑page app can use S3+CloudFront for assets, API Gateway→Lambda for logic and DynamoDB for state; Parallax’s UEFA campaign replaces a $122,000/month traditional stack with $122,000 vs $173/month and scales from near zero to large spikes. Examples include 2.7 billion endpoints aggregated by Localytics, per‑frame parallel video rendering (spawn ~25 functions/frame), Alexa skills as Lambda backends, a 100 concurrent default limit and 100ms billing chunks.
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