Cloud, Unified Communications Avaya buys Richmond Hill’s Esna to easily integrate multi-vendor communications into cloud apps by Mark Cox • May 29, 2015 Esna will become a wholly-owned subsidiary of Avaya, with Avaya ‘planning to adopt’ Esna’s over 200 active channel partners. Avaya also said the deal will provide existing Avaya partners with significant new opportunities. Read more → Share the Buzz:TweetMoreEmailPrintRedditShare on Tumblr