AWS Lambda and Google Cloud Functions are two popular serverless execution environments for building and connecting cloud services. Both offer rapid development and scalable applications by allowing developers to write single-purpose functions triggered by events or HTTP requests. A comparison of these two services reveals key differences in features, performance, pricing, and integration capabilities. AWS Lambda supports a wider range of languages and offers native VPC integration, while Google Cloud Functions provides deeper integration with Google Cloud services. Pricing models differ, with AWS Lambda charging in 1ms increments after the first 100ms and Google Cloud Functions charging in 100ms increments. Both services offer robust event-driven architectures and cold start mitigation strategies, including provisioned concurrency and minimum instances. GPU support is available for both platforms, but with different limitations. VPC support is essential for security and access to private resources, with AWS Lambda offering native integration and Google Cloud Functions providing serverless VPC Access Connector feature. Ultimately, the choice between AWS Lambda and Google Cloud Functions depends on specific use cases and requirements.