Amazon Redshift Spectrum vs s3-lambda: What are the differences?
What is Amazon Redshift Spectrum? Exabyte-Scale In-Place Queries of S3 Data. With Redshift Spectrum, you can extend the analytic power of Amazon Redshift beyond data stored on local disks in your data warehouse to query vast amounts of unstructured data in your Amazon S3 “data lake” -- without having to load or transform any data.
What is s3-lambda? Lambda functions over S3 objects: each, map, reduce, filter. s3-lambda enables you to run lambda functions over a context of S3 objects. It has a stateless architecture with concurrency control, allowing you to process a large number of files very quickly. This is useful for quickly prototyping complex data jobs without an infrastructure like Hadoop or Spark.
Amazon Redshift Spectrum and s3-lambda can be categorized as "Big Data" tools.
s3-lambda is an open source tool with 1.06K GitHub stars and 43 GitHub forks. Here's a link to s3-lambda's open source repository on GitHub.