Differences Between Lync Online (Office 365) with On-premise Lync Server

    The following matrix compares features across the delivery models for Lync Server 2010 (on-premises with or without federation), Lync Online with Office 365, and Office Communications Online (“OC Online”). 

    Feature Lync Server 2010 Lync Online OC Online
    IM and Presence
    1-to-1 and multiparty IM/presence Yes Yes Yes
    Address book search Yes Yes Yes
    Distribution list (DL) expansion (DLX) Yes Yes Yes
    File transfers Yes Yes Yes (inside firewall only)
    PC-to-PC audio/video (A/V) dial-out calling Yes Yes Yes (inside firewall only)
    Click-to-communicate from Office applications Yes Yes Yes
    Interactive contact card in Office 2010 Yes Yes No
    Lync skill search in on-premises SharePoint Server Yes No No
    Lync skill search in SharePoint Online No No No
    Persistent Group Chat Yes No No
    Privacy mode Yes No No
    Lync External Connectivity (Federation and Public IM Connectivity)
    IM/Presence and A/V Federation with other organizations running Lync Server, Lync Online, or Office Communications Server Yes Yes No
    IM/presence and A/V federation with Windows Live Messenger Yes Yes No
    IBM Sametime federation Yes No No
    IM/presence federation with Extensible Messaging and Presence Protocol (XMPP) networks (including Jabber and Google Talk) Yes No No
    IM/presence with AOL and Yahoo Yes No No
    Meetings (A/V and Web Conferencing)
    Meeting attendee capacity 250 250 No
    Desktop sharing Yes Yes No
    Application sharing Yes Yes No
    White boarding and annotations Yes Yes No
    PowerPoint upload for online presentations Yes Yes No
    Upload for other Office file types No No No
    Polling Yes Yes No
    Multiparty PC-based A/V Yes Yes No
    Unauthenticated experience in Lync Web App Yes Yes No
    Unauthenticated attendee (rich client) Yes Yes No
    Authenticated experience in Lync Web App Yes No No
    Scheduled conferences (using the Online Meeting Add-in for Lync 2010 in Outlook) Yes Yes No
    Outlook delegation for scheduling meetings Yes Yes No
    Support for RoundTable conferencing device Yes Yes No
    Lobby Yes Yes No
    Interoperation with certified partners for dial-in audio conferencing No Yes No
    Provisioning for dial-in audio conferencing service for Office 365 direct customers No Yes No
    Phone dial-out from scheduled meetings via third-party dial-in conferencing service No Yes No
    Client-side recording and playback Yes No No
    Server-side recording and playback No No No
    Generate a link to a scheduled meeting via web page No No No
    Scheduling an online meeting in Outlook Web App No No No
    Dial-in audio conferencing on Lync Server Yes No No
    Multimedia content upload No No No
    Screen shot capture (including annotation) No No No
    Backstage/content preview for presenters Yes Yes No
    Mute all attendees Yes Yes No
    Mute individual attendees Yes Yes No
    Unmute all attendees Yes Yes No
    Unmute individual attendees Yes Yes No
    In-meeting attendee permission controls Yes Yes No
    Interoperability with on-premises video conferencing systems Yes No No
    Voice and Telephony
    PSTN calling (incoming/outgoing calls) Yes No No
    Call hold/retrieve Yes No No
    PSTN dial-out for meetings Yes No No
    Advanced call controls (including transfer, forward, and simultaneous ring) Yes No No
    Access to Exchange Online voice mail Yes No No
    Team calling Yes No No
    Delegation for voice (for example, boss delegates to admin) Yes No No
    Call park Yes No No
    Outgoing Direct Inward Dialing (DID) manipulation Yes No No
    Enhanced 9-1-1 (E9-1-1) Yes No No
    Dial plans and policies Yes No No
    IP desk phone support Yes No No
    Survivable Branch Appliances for branch office resiliency Yes No No
    Call admissions control (CAC) Yes No No
    Support for analog devices (for example, fax) Yes No No
    Response groups Yes No No
    Private line (secondary DID for executives) Yes No No
    Interoperation with third-party private branch exchange (PBX) Yes No No
    Presence interoperation with third-party PBX No No No
    Remote call control (RCC) (also known as "click-to-call") with on-premises PBX Yes No No
    Malicious call trace Yes No No
    Unassigned number Yes No No
    Network Quality of Service (QoS) - Differentiated Services Code Point (DSCP) Yes No No
    Media path optimization Yes No No
    Phone number management Yes No No
    Call detail recording (CDR) and billing reporting Yes No No
    Integration with call center solutions (Aspect) Yes No No
    Client Support
    Lync 2010 Yes Yes No
    Lync Web App (for participating in scheduled meetings) Yes Yes No
    Lync 2010 Phone Edition (IP phones for Lync) Yes No No
    Lync 2010 Attendee client (for joining meetings) Yes Yes No
    Lync 2010 Attendant client (receptionist rich client) Yes No No
    Lync 2010 Mobile No No No
    Office Communicator for Mac Yes No No
    Office Communicator Web Access (2007 R2) Yes No No
    Office Communicator 2007 R2 Yes No Yes
    Office Communicator Mobile (for Windows Mobile 6.x phones) Yes No No
    IM and media encryption Yes Yes Yes
    IM filtering Yes Yes Yes
    Anti-malware scanning for meeting content and file transfers Yes (partner solutions) No No
    IM archiving (server-side only) Yes No No
    Exchange and SharePoint interoperability
    Presence interoperation with Exchange and SharePoint on-premises Yes Yes Yes
    Presence interoperation with Exchange and SharePoint Online Yes Yes Yes
    \[Exchange Unified Messaging](/news/agile-it-is-named-an-exchange-unified-messaging-partner-for-office-365-voicemail-integration/) (UM) interoperation with Exchange Online Yes No No
    Exchange UM interoperation with Exchange on-premises Yes No No
    Hybrid Lync Online and On-premises Administration
    Server and cloud coexistence (split domain) on user basis (some users on-premises, some users online) No No No
    Splitting workloads (for example, running IM/presence/voice on-premises, and conferencing in the cloud) No No No
    Windows PowerShell support Yes No No
    Web-based user interface (Lync Server Control Panel) Yes No No
    Attendee/user reporting No No No
    Reporting (using CDR and Quality of Experience (QoE))) Yes No No
    Third-party API Support
    Client automation APIs (client-side only) Yes Yes No
    Server side APIs Yes No No

    Read more @> http://community.office365.com/en-us/w/lync/480.aspx

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