Public AWS challenges shared by the EraCode community. These pages are teasers — skill maintenance starts when you attempt the full problem inside EraCode.
Quick daily practice on AWS data structures: choose an efficient DynamoDB attribute type and implement a tiny helper that builds a compact DynamoDB item from a JS object.
Practice an internationalization pattern on AWS: using CloudFront geolocation to pick a locale-specific origin path without changing your app code.
Practice a lifecycle/initialization pattern in AWS Lambda: doing expensive setup once per execution environment and reusing it across invocations.
Practice preventing accidental recursion in AWS Step Functions by using execution metadata to short-circuit loops.