A hyperbolical and completely unnecessary adverbial phrase in techie or business-speak that simply means "much" or "considerably".
"I think we would like it to be more reliable," Katz-Bassett said. "It's orders of magnitude less reliable than the telephone network right now. I think it should be pretty possible to get it closer."
Only slightly less useful than real analysis, order of magnitude analysis (instead of using actual values) only considers what size "ruler" one would choose to measure each thing then compares those "ruler" sizes to assertain whether thing one is huge compared to thing two or vice versa.
