There is a new product from Microsoft: Loop. It will integrate with Office and do - so it is claimed - similar things of Notion and similar apps.

I still cannot see it available in Office 365 updates in my country in Europe (Microsoft says it will be released in Summer 2022), but reviews are already available.

https://www.youtube.com/watch?v=OjShmC6Y_is

Yes, I know: be cautious with v.1 from MS, but as many other apps, if you have Office 365 (Enterprise), it will come up in your pc without notice.

That breathless video is from the beginning of the year. Microsoft announced Loop last fall ( https://www.theverge.com/2021/11/2/22758951/microsoft-loop-fluid-components-office-collaboration-app ) with expected release some time this year. It was originall called Fluid, with the intent to compete with Google Docs ( https://www.theverge.com/2020/5/19/21260005/microsoft-office-fluid-web-document-features-build ), not Notion. But Notion seems to be a possible victim along the way, as Microsoft seemed to take quite a few UI and UX cues from Notion.

A couple of days ago some recent screenshots were leaked ( https://www.youtube.com/watch?v=uaDeD3116vM ) so its release may be imminent.

Microsoft is serious about integrating it into 365/Teams/Outlook

https://techcommunity.microsoft.com/t5/microsoft-365-blog/microsoft-loop-components-extending-capabilities-in-microsoft/ba-p/3530785

If Loop becomes an included value-added part of the 365 subscription, I can see it becoming incredibly popular, very quickly.

I never took to Notion, but I know one person who has used it with his small business to replace Evernote, Trello and Slack. In direct competition it's not best-of-breed but as a single product it's good enough for many people.

Here probably the latest (of few days ago) with a link for a public preview that at time of writing did not work properly (typical).
https://www.onmsft.com/news/microsoft-loop-homepage-leaks

As of today, my employer's Teams setup includes a link for "Loop components." Apparently it puts things like lists and paragraphs into the Teams chat that any participant can edit.

Oh, goodie. Now I can post something for collaboration that will not only scroll out of sight on my screen, but on everyone else's, too.

Unless I'm missing something, not fully useful until the Loop canvas is available.

How... Microsoft.

Amontillado wrote:

As of today, my employer's Teams setup includes a link for "Loop
components." Apparently it puts things like lists and paragraphs into
the Teams chat that any participant can edit.

Oh, goodie. Now I can post something for collaboration that will not
only scroll out of sight on my screen, but on everyone else's, too.

Unless I'm missing something, not fully useful until the Loop canvas is
available.

Once upon a time (read: a couple of decades ago) there was the OLE technology. It allowed to share mainly Microsoft files among apps, so to work "live" on them. It never became mainstream. It never died ufficially either, but it has been buried as time went by: not enough reliable (prone to lose data), not enough general (Win only).

Enter Fluid Framework as a substitute. The technology tries to do what OLE was not able to fully accomplish: more reliable, more general, and above all collaborative. Some Office and connected apps (Teams in primis) has started to pick up components from it already, as noticed.

Loop is (will be) a specific (and it is claimed "flexible") canvas app, using workspaces, pages, and sub-pages, based on Fluid Framework.

Disclaimer note: This is what I understood so far. Time and - I am sure - someone here will correct or improve my interpretation.

Reminds me of Google Wave a bit...