M365 - Exchange Online Center
ENow Software's Microsoft Exchange Online blog built by Microsoft MVPs for IT/Sys Admins.
Reddit, a popular online discussion site, has a running joke: people are often asked whether they would rather fight a horse-sized duck or 100 duck-sized horses. This question has surprising relevance to Office 365, because while Microsoft customers often worry about the threat of a widespread large outage (the horse-sized duck), they’re actually getting beat up by a larger number of smaller, less damaging but still annoying outages (the herd of duck-sized horses). There are a couple of deeper issues here that warrant a closer look to understand what the real risk is, and what you can do about it.
Hybrid environments are complicated. Microsoft has done tons of work over the years to try to simplify the hybrid experience—a huge task when you remember that hybrid Office 365 deployments can cover Active Directory, Exchange, SharePoint, and Skype, along with cloud-only services such as Office 365 Groups. Sometimes, despite the best efforts of the wizards of Redmond, running a hybrid deployment leads to situations that we call Hybrid Headaches… problems that "on-prem only" environments won’t encounter but which can be incredibly frustrating obstacles in a hybrid environment.