VPWS vs X-connect

[sergeyrar]

What is the difference between these two L2vpn technologies?

The bits of info I was able to find but still don't answer my question-

VPWS:

Virtual private wire service (VPWS)—Has a characteristic of a fixed relationship between an attachment-virtual circuit and an emulated virtual circuit. VPWS-based services are point-to-point (for example, Frame-Relay/ATM/Ethernet services over IP/MPLS).

source: http://www.ciscopress.com/articles/article.asp?p=680839&seqNum=10

X-connect:

Xconnects are used to connect 2 distant sites that can use any of these technologies : Frame-Relay, PPP, Ethernet, ATM, that's why xconnects are also called Any Transport over MPLS (AToM).

source: https://learningnetwork.cisco.com/thread/68730

[wintermute000]

I think its more terminology than anything else. the actual traffic (EoMPLS) is the pseudowire, whilst the end to end LSPs comprise the VPWs service. Same same

https://wiki.mef.net/pages/viewpage.action?pageId=29753773

[dlots]

VPWS requires MPLS to be running over it.  I honestly don't know alot about it though.

X-connect is IP only, so very little extra work you have to do.

[wintermute000]

actually xconnect is EoMPLS or L2TPv3