Interesting article on Valuation Multiples for WAN The results of this exercise are as follows:
SAAS Price/Rev 2011: 4.8x
SAAS Price/Rev 2012: 3.9x
SAAS Price/EBITDA 2011: 66x
SAAS Price/EBITDA 2012: 31x
https://www.avc.com/a_vc/2011/09/determining-valuation-multiples.html