Ecommerce Platform Market Size, Share, and Industry Analysis By E-commerce Model (Business to Business (B2B) and Business to Customer (B2C)), By Deployment (On-premise and Cloud-based), By Industry (Beauty & Personal Care, Consumer Electronics, Fashion & Apparel, Food & Beverage, Home Decor, Health & Wellness, Household Consumables, and Others), and Regional Forecast, 2026-2034