The Producer Price Index, or PPI, is a monthly business-cycle gauge of factory-gate prices, and MoM means change versus the prior month. The European Commission compiles it through Eurostat, the European Union statistical office, as part of short-term business statistics and a Principal European economic indicator. It covers ex-works domestic sales excluding imports for NACE Rev.2 sections B to D plus division E36, using actual transaction prices excluding VAT. It captures price moves before retail, so it foreshadows inflation but does not measure consumer prices or living costs.