Marketing sometime is messing around with tech ; this is specifically true with product name changes.
As you know, few years back Microsoft has decided to rename the Intune and SCCM products to Endpoint Configuration Manager.
Well, few months back (October 2022), Microsoft has decided to change again the name back to Intune and MCM (Microsoft Configuration Manager) for SCCM.
With this name change comes a new URL for the Intune administration portal: https://intune.microsoft.com/
The current http://endpoint.microsoft.com/ URL is still valid and working but ultimately will disappear.
Time to update your favourites