Blackboard Learn, D2L Brightspace and Moodle systems with an external single sign-on portal for authentication require Respondus 4.0 Campus-wide, a preconfigured server settings profile with the option "Use browser-based authentication for SSO" enabled in the profile and an additional Authentication Module add-on.
Instructure Canvas with an external single sign-on portal for authentication does not require the option in a preconfigured server settings profile but does require the additional Authentication Module add-on.
Additional details are in:
Blackboard Learn - Addendum for Blackboard Learn 9.1 with SSO Authentication
D2L Brightspace - Addendum for Desire2Learn Learning Environment using Shibboleth (and other SSOs)
Moodle - Moodle Administrator Guide for Respondus 4.0 (the full version, not the abridged version)
Available for download from the Respondus Administrator Area at https://campusportal.respondus.com/campus-portal/login.php by the designated Local Support Contact.