Truss is an open-source model serving technology that offers a seamless bridge from model development to deployment, providing features such as automatic model serialization and deserialization, portable training environments, rapid iteration, integrated pre- and post-processing functions, and support for running predictions on GPUs. Truss is designed to work with popular frameworks like Flask, Django, and TensorFlow, and it also supports Baseten users by bundling platform features like GPU support and secret management. With Truss, developers can deploy models from more frameworks using the out-of-the-box `baseten.deploy()` command, which doesn't require explicit use of Truss. The technology is built to power future model deployment features and grow with user cases, making it a foundational component for Baseten.