Load management

Serverless architectures promise automatic load management, but poorly tuned concurrency or cold-start profiles can still bite. Dive into reserved concurrency, provisioned concurrency, step-scale policies, and graceful degradation patterns such as queue-based back-pressure with SQS and Kinesis. Master canary deployments, blue-green routing, and multi-AZ rollouts to ensure five-nines reliability even during Black-Friday-style traffic spikes.