1. A non-transitory computer-readable storage medium having stored thereon executable instructions that, as a result of execution by one or more processors of a computer system, cause the computer system to at least: instantiate a secure execution environment configured with a first set of executable instructions that, as a result of execution within the secure execution environment, causes the computer system to at least: receive information associated with a web services request; determine one or more tasks to perform, the one or more tasks based at least in part on the information; execute a task of the one or more tasks, the task configured to generate response information, the response information usable to generate a response to the web services request; and encrypt the response information using a key stored within the secure execution environment, the key available to a component of the computer system configured to process the generated encrypted response information; provide the generated response information to the component; and wherein the computer system is further configured with a second set of executable instructions that, as a result of execution outside of the secure execution environment, are unable to cause alteration of the response information within the secure execution environment.