RunPod is a cloud computing platform that provides users with access to GPU instances, serverless GPUs, AI endpoints, and free bandwidth. It allows users to deploy container-based GPU instances and pay per second for serverless GPU computing. It also includes features such as Cloud Sync, CLI/GraphQL API, OnDemand/Spot GPUs, SSH/TCP Ports/HTTP Ports, and Persistent Volumes. RunPod provides a secure and community cloud that provides low-cost and reliable access to compute resources.