Thanks for your interest in Strata!
The pre-Strata code ran as a server and included a web UI primarily as a way for developers to interact with it, view the contents of its databases, and run calculations.
Strata is designed as a library, and is intentionally much simpler and more lightweight than the previous codebase, while offering all the same core market risk and analytics functionality at an API level. The docs, command-line tool and code examples are designed to help developers integrate Strata into their applications.
While it does not include a web UI, we are building an Excel add-in for Strata. If this would be of interest to you then please get in touch for a trial.
Please let us know if you have any questions or are able to elaborate on your use-case.