Multi-Vendor Support Services Market Size, Share & Industry Analysis, By Service Type (Hardware and Software), By Enterprise Type (SMEs and Large Enterprises), By Service Delivery Model (Onsite, Remote, and Hybrid), By Application (IT Operations, Sales & Marketing, Finance & Accounting, Human Resources, Supply Chain & Logistics, and Others), By Industry (Healthcare, BFSI, Retail, Manufacturing, IT & Telecom, Media & Entertainment, and其他）和区域预测，2025-2032