Automating the provisioning of servers to treat them like 'cattle' rather than 'pets', using automation software such as Chef to maintain consistency and automate setup. This approach can also be applied to testing infrastructure, with tools like Sauce Labs providing a richer set of functionality for externalizing interface testing. The use of cloud-based testing solutions requires the creation of a VPN tunnel between the internal application and the testing driver machines, which can be achieved using Chef and the Sauce Connect proxy. Additionally, Chef can be used to manage other aspects of the testing infrastructure, such as Jenkins or TeamCity servers, and deploy applications into container runtimes or virtual machines.