If you're a Moodle admin, this page will tell you about the major changes affecting you in Moodle 4.3. If you'd like to see full details of the release with technical information, here are the Moodle 4.3 release notes.
Multi-factor authentication brings added security to your site.
YouTube and Vimeo
'Do not track' privacy options are available for YouTube and Vimeo.
Matrix as an integrated provider
Admins can enable Matrix as a communication provider for teachers to use in courses.
Quick link to rooms
The custom link option allows teachers to link to an existing room in Matrix or another provider.
Default activity completion (MUA)
Site-wide default completion page
Admins can define default completion settings which teachers can configure in an improved default completion page.
Progressive display of completion conditions
Completion conditions are neater with additional options displayed only when selected.
Restrict tools to categories
LTI External tools may be restricted to courses in specific categories only.
Premium TinyMCE plugin support
Add Tiny plugins without the need to install additional extensions.
Another new report source
Course categories is now available as a new report source.
Custom reports may be filtered on context level.