Firecracker provides hardware-virtualization-based isolation, aiming to achieve near-bare-metal performance with minimal overhead.

AWS claims that, unlike traditional virtual machines, these microVMs launch in milliseconds, enabling rapid and secure function execution with a minimal memory footprint.

The Amazon Linux AMI is specifically optimized for cloud-native and serverless workloads, aiming to provide a lightweight, secure, and performant runtime environment.

"[6] The Lambda team described Provisioned Concurrency as "ideal for implementing interactive services, such as web and mobile backends, latency-sensitive microservices, or synchronous APIs.

In April 2022, researchers found cryptomining malware targeting AWS Lambda named "Denonia".