Why is Microsoft's outage lasting so long and will emails be lost?

Microsoft says it is continuing to restore services including Outlook and Teams following a global outage.
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CNBC TechnologyMicrosoft apologizes for massive outage that took down Outlook and other 365 servicesBBC TechnologyMicrosoft outage 'stark reminder' of how much we rely on techThe VergeMicrosoft's massive Outlook outage continuesTechCrunchMicrosoft’s latest email outage turned into a full-blown global cloud crisisMediaNamaMicrosoft 365 applications hit by global outage for over 10 hoursCointelegraphMicrosoft 365 outage hits Outlook email and Teams calendars worldwideThe RegisterMicrosoft struggling to fix massive cloud outage that's taken down email and Intune