Procurement as a Service Market Size, Share & Trends Analysis Report By Component (Strategic Sourcing, Spend Management, Contract Management, Category Management, Process Management, Transactions Management), By Organization Size (Large Enterprises, SMEs), By Industry Vertical (Manufacturing, Retail and consumer packaged goods, Banking, Financial Services, and Insurance (BFSI), IT and Telecom, Energy and Utilities, Healthcare, Travel and Hospitality) and By Region (North America, Europe, APAC, Middle East and Africa, LATAM) Forecasts, 2026-2034