Beyond Redmond's interest in POS for small business, Microsoft has not been taken very seriously in designing retail applications. Is Microsoft seriously pushing its Office suite to build supply chain collaboration apps? Looks like they're trying, at least, according to at least one Microsoft blog.
This particular blog has pushed cutting edge approaches before so it's not something to be dismissed out of hand. The argument for considering Office is that it's likely already in the system but is Office robust enough for mission-critical supply chain coding?