Development costs can be reduced by creating user interfaces on one base for all platforms (WEB, device display, Windows, Linux, macOS).
In some companies, the contractor for the WEB develops one interface, and for the device another from scratch using other technologies, it turns out double work, for which the customer pays twice, and sometimes triple, and at the same time does not see other alternatives, because the performer gave convincing reasons.
In 11-parts, it works differently, several interfaces are developed automatically using a unique technology, and they can differ at the request of the customer, but all the built-in mechanisms work the same and are integrated once for everything. The interfaces work synchronously, all changes are instantly displayed on all clients.
After changing the functionality in the logic, interfaces, for example, WEB and devices, do not require modification, this approach saves a lot of time and resources.