Postback / Pixel ( Server to Server ) Campaign Tracker

Hello, We have read your requirement carefully. you need a web application We can do this job easily.. We have already developed many WEB APPLICATION, ERP, CRM, School management system, Hospital management system, Listing website Etc. We have great knowledge in asp.net, mvc, core php, cordignetor and Laravel. 6+ year experience. We are an expert in the E-commerce web designing and development. We will provide the clean and modern design with mobile friendly. 1. What will be the payment gateway? 2. Will the solution be multivendor? 3. What will be the shipping APIs Or Who will be responsible for the product delivery? 4. Who will manage the products and other detail on the solution? We will set up all things that you are looking for. Best regard Infourier