This document discusses just-in-time IT infrastructure provisioning using commodity resource pools. It advocates allocating resources on demand to accomplish production tasks by leveraging massive investments in compute, storage, and network infrastructure from various service providers. This approach aims to reduce costs and spread risks across production participants by only paying for consumed resources. The document also describes how abstraction of infrastructure through virtualization and programmatic interfaces can facilitate heterogeneous, multi-vendor provisioning driven by workflow tools through a centralized exchange point.