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is there any difference between dirsync and AAD SYNC OR ANY later versions of dirsync with its previous versions<br />
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as i know in earlier version passwords sync was one way from on premise to office 365<br />
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also Distribution groups that are created in Office 365 through directory synchronization must be managed in the on-premises environment?
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is there any difference between dirsync and AAD SYNC OR ANY later versions of dirsync with its previous versions

as i know in earlier version passwords sync was one way from on premise to office 365

also Distribution groups that are created in Office 365 through directory synchronization must be managed in the on-premises environment?

exchange, office 365

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.