PMO: Project management office, or Program management office. Neither required under scrum. Typically this group provided project management support functions, sometimes direct management of projects. Staffed by project managers and or program managers.

I like the Cargo Cult Project Management article, but feel the office is no longer required for software development programs.

I think you’re confusing the PMO role with that of the Program Manager. Ideally, the PMO has no program management functions.

Now about Cargo Cult Programming, I’ve published an article titled Cargo Cult Project Management, hope you’ll enjoy it!