Snap Inc. shares how they rebuilt their cloud architecture for Snapchat using AWS services to handle over 5 billion Snaps per day. The video details how Snap leveraged AWS Elastic Kubernetes Service (EKS), ElastiCache, CloudFront, S3, and DynamoDB to create a low-latency, real-time messaging system capable of processing 10 million transactions per second. This architectural overhaul resulted in significant infrastructure cost savings and a 24% reduction in median latency for sending image snaps. The presentation offers valuable insights into scaling cloud infrastructure for high-volume, real-time applications while optimizing performance and costs.