It seems as though there are as many definitions of Unified Communications out there as there are people you meet. No one seems to be in agreement as to what this entails. Some vendors are trying to "lump" every service they offer into this category....

I was just wondering how many organizations out there are actively involved/engaged in SaaS offerings? I also hear now about PaaS (Platform as a Service). Is anyone out there also involved with this? What are your thoughts on either or both?