You can ’embed’ an O365 form in a blog by pasting the url into a post on a line by itself. Eg: https://forms.office.com/Pages/ResponsePage.aspx?id=oyzTzM4Wj0KVQTctawUZKSmIYBesqWVJqR5zz1mWNAVUOU1CUzVWOVFRUjc5RFcxQlJPTlhXMFVUNS4u

It will embed like this:

Not a true embed but a link to the form.

Update 14 Aug 2024 After some problems with Sway embeds in Glow Blogs due to changes in microsoft urls we have developed a better way to embed these.

All you do is copy the embed code from a Sway and paste that into the Post or Page editor in Glow blogs. When you paste it it changes from the html code to a shortcode. Like this:

[glowsway attribute=WR42BzNQhsCisIAW]

When you publish it will look like this:

You need to do this in the classic editor. If you use the Block editor you need to add a classic block and paste it in there. Here is a very short video showing the process in both editors.