Finally, overlay networks - such as the ones provided by InterNap, Akamai, and Limelight - can help deliver IP video.Technology isn't the only thing that has to change. (Virtela has been an early mover with a pure in-the-cloud optimization offering, recently joined by newcomers Pareto and Aryaka.). Carriers can offer QoS and other flavors of optimization in their service clouds, including protocol acceleration, latency mitigation and finer-grain traffic shaping than QoS allows. Increasingly, virtual appliances are available, too, for example from Blue Coat, Certeon and Citrix. Vendors with appliances that enable ADO on the WAN include Blue Coat, Cisco, Citrix, Exinda, Ipanema, Juniper and Riverbed. On the WAN, the most typical ADO models are to have appliances at one (asymmetric) or both (symmetric) ends of the connection to improve traffic flow through some combination of compression and caching, acceleration, traffic conditioning (to mitigate packet loss, for example) and traffic shaping (prioritization).
Products and services that enable ADO include application delivery controllers, WAN optimization devices, QoS and overlay networks. Effective ADO encompasses application availability and performance as well as security, WAN optimization, and management and monitoring. This means that in addition to planning ahead for increased capacity, network managers need to devote some serious thinking to crafting an application delivery optimization (ADO) strategy.What's ADO? In a nutshell, it's architecting to ensure appropriate, effective delivery of critical applications (including video) to distributed and mobile users. Moreover, interactive video is extremely sensitive to latency and jitter, and also sensitive to loss. Both interactive and streaming video are characterized by high bandwidth, and can double or triple typical branch-office connectivity requirements. And Global Crossing recently acquired Genesis Networks, which operates an IP-based global video-distribution network.In light of these trends, network managers need to rethink their WAN strategies. Session border control vendor Acme Packet recently announced a partnership with Glowpoint to enable secure business-to-business conferencing. Meanwhile, a surprising 50% say they plan to roll out streaming video over the next year.Vendors and service providers are taking note. According Nemertes Research's recently published 2010/2011 benchmark study, more than 80% of companies now rely on IP-based videoconferencing for collaboration, and are looking to extend that capability beyond their organizational borders. The funny part? Far from killing the video star, the Internet has probably done more for video than any other medium. Called "Internet Killed the Video Star," it's a tongue-in-cheek reference back to the 1979 song, "Video Killed the Radio Star," by the Buggles - the very first music video on MTV. ★ Cool effect mix video editor to create video with effects.There's a song by the Limousines that always makes me smile. ★ Slideshow maker after edit photo and video
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