Comment by arghwhat

> Usually the biggest hurdles are Active Directory, deep Excel trenches and reliance on Outlook.

It's mostly a mental block for the corporate IT department. People are already familiar with other email and calendar apps (e.g., gmail, apple mail, ...), and Active Directory only matters if you're running a lot of internal infrastructure feeding off it, usually through standard protocols like LDAP or OIDC.

> How are Danes submitting taxes?

Regular people don't submit taxes, they only make changes to the report if necessary once it comes out (e.g., to fix a missing deductible, such as commute distance deductible). Most stuff, including deductibles, are automatically reported.

All tax, including personal corrections and corporate tax, is done through an online web application. We do depend on smartphone apps for Android and iOS, but there's no Windows desktop apps or applets anywhere - at least to the public.