|
Unified Communications as a Service (UCaaS) is a category of “as a Service” or “Cloud” delivery mechanisms for Enterprise Communications. Similar to “Platform as a Service” (PaaS) (where data center capacity is made available to an enterprise on a consumption model from a service provider), with UCaaS, unified communications services can be made available from the cloud to enterprises. UCaaS is part of the global industry trend towards cloud services. ==History== UCaaS first came to prominence 2014, on the heels of the cloud IT movement. Traditionally, enterprises have acquired and deployed their own communications infrastructure. This was by far the most economical approach,〔http://searchunifiedcommunications.techtarget.com/feature/On-premises-vs-hosted-cloud-UC-Comparison-chart〕 as enterprises could deploy their own PBX switches and avoid the cost of individual phone lines for each employee. With the advent of IP and virtualization of the data center, the economics have shifted back〔http://www.ucstrategies.com/unified-communications-views/hosted-vs-on-premise-reaping-the-benefits-of-both-for-your-business.aspx〕〔http://www.fierceenterprisecommunications.com/story/ucaas-vs-premise-uc-debate-comes-down-tco/2015-02-11〕 in favour of a service provider model. The SP invests in a virtualized data centre, negating the need for the enterprise to do so, and offers a more flexible consumption model.〔http://www.nojitter.com/post/240169853/evaluating-cloud-uc-costs〕 Prior to the Cloud, service providers offered IP Centrex and Hosted communications services. These were almost identical to the UCaaS capability, except for the fact that “virtualization” has meant that the economics of UCaaS is so much more compelling.〔http://searchunifiedcommunications.techtarget.com/feature/Approaches-to-unified-communications-virtualization〕〔http://www.networkcomputing.com/unified-communications/virtualization-unified-communications-meet-at-last/d/d-id/1103641〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Unified Communications as a Service」の詳細全文を読む スポンサード リンク
|