Sorry, my fault, poor use of terms on my part. As for disclosure, I misunderstood -- when you said look in my admin portal, I for some reason figured there was something somewhere I could get to, as opposed to my organization's IT department doing it. I'm not IT or the brass of said organization. Actually, I'll only be affiliated with them for a few more months.
Am aware Outlook.com isn't proper Exchange -- it just uses EAS, as Gmail did back in the day. Which interestingly, as for Outlook.com, used to properly synchronize read status and update inbox state in the background on the iPhone, at least last I tested months ago before the migration to the Office 365 infrastructure became a thing. What I wasn't sure about was whether, when this O365 move is completed, it would be more in line with what a full Exchange configuration would be. Maybe I'm just behind on my MS/Outlook.com reading.
Do you have any thoughts as to silent filtering with Outlook.com as well as with Office 365, and what that might mean for the move? I've posted a few times here as to the whole silent filtering issue with iCloud and Apple's apparent tendency to be a bit heavy-handed with never delivering messages in the interest of filtering out suspected spam, as opposed to simply using spam folders more. If Outlook.com / Office 365 could be felt to be on par with Gmail's reliability in the sense that messages err towards delivering to spam folders as opposed to silent filtering, it'd probably convince me to spend a couple hours and migrate every account I have across the internet from iCloud to Outlook, at least for mail. Unsure if there's any perk to moving the rest -- contact field granularity and other pros/cons to calendaring/pictures/etc of which I might be unaware at this point.
Would consider paying for Office 365 Business Essentials as me as the sole user if it would help. Of course, I don't have my own domain. Would be nice if it could be used with @outlook.com addresses, but my understanding is that there is (was?) a "default" of @onmicrosoft.com with the ability to use other domains.
Appreciate your help.
No worries, and I rarely take this type of interaction personally, I get help and I offer help. My frustration, and I'm sure whsbuss will echo this to a degree, is either the lack of transparency by Apple/MS/Google regarding their portal services or the way so much documentation is fragmented and spread out in their web sites - I'm a construction engineer and a technical/contract writer, and I expect everything to be "available" but I have to work with life-safety in mind, so I try to not get too worked up about it. Too much...
Taking a break from my work now, so here's a bit of help. First, the move of Outlook cloud services - also, don't "Google" anything about MS if you want answers, use "Bing" and you'll get deeper links to documentation - there's an Office 365 portal dedicated to deployment listed as a blog hosted by MS, TechNet, and the built-in documentation within the O365 Admin portal. I don't follow too many tech bloggers, preferring to read stuff for myself. I read the "Exchange" section of TechNet -
https://technet.microsoft.com/ - and look to the Library section for more details; you won't find much yet about the Outlook cloud services (that's what MS calls it internally now), and then one can surmise that Outlook.com is "in process". Some of the documentation of Exchange Apps is starting to appear in TechNet's Exchange Library, and you can see for yourself more about the Accompli app relevant to the move from AWS to Azure in the "Data Services" section here:
https://technet.microsoft.com/library/mt465744(v=exchg.150).aspx - and notice the 1/11/2016 update date, just a few days ago at this writing.
As for EAS, I win an argument every time - someone offers that "________ supports EAS", and I say "no it doesn't" but I'm not here to pick nits with anyone. Gmail never supported EAS - Google licensed it but implemented a subset of EAS plus Google-specific services for free users and paid users; I was a Google Apps buyer for a few years. Google, like MS with Outlook, don't port all of the EAS options to us free users - here's a TechNet page:
https://technet.microsoft.com/en-us/library/aa998357(v=exchg.150).aspx - and it's difficult to find a free client that subscribes to those services largely due to MS wanting to get paid for each EAS CAL! Related to your question about silent filtering, in Outlook.com we'll likely never have access to that control likely due to MS not wanting miscreants abusing MS's free services.
As to the Outlook cloud services, as I'd alluded to here earlier, one of my Outlook.com accounts appears to be running on MS's O365 Exchange platform while the second is still EAS - I'm seeing that in Win Outlook 2016 when I dive into its settings. Both accounts are "dumb" in the Win Accounts app relative to settings, but I'm also seeing more settings options for those - and iCloud! - accounts.
A tip about O365 accounts, if you're interested in Office 2016. I have a few accounts, and my next "buy" will be a discounted version of Office 365 Home (Best Buy matched Amazon's low price), and get Business Essentials - you get your 5 installs of Office plus the same email service of Business Premium. I use E3 solely for it's video portal, which is slick. Be prepared to be overwhelmed as there's no "middle ground" - there's about 20 settings for Outlook.com and about 320 for Office 365...
But, every time there's an update to the Mail/People/Calendar apps in Win 10, there seems to be more exposure to my migrated Outlook account and also my iCloud account. With the latest update to Win 10 for these apps (last week) heck, even now all of my iCloud Calendar groups are showing up in the built-in-to Win 10 Calendar client! I imagine that someone at MS is standing over their programmers as I'm typing this to get this crap done...
As to your final posed situation, yes, you can use your own linked domain, the @onmicrosoft "domain", or both at the same time to use your own branded domain with the @onmicrosoft as an alias or backup option.
Don't waste too much time poring through TechNet's documentation - it's pretty dry stuff, and I have a soon-to-be-sold Exchange Server 2013 setup as I'm moving us to O365 totally soon. I've only taken a quick look about for more details on Outlook cloud services, but there's clients to gladhand and permits to apply for (ugh!). Cheers!