MassiveLive is a comprehensive event staffing and operations platform built for organisations that run large-scale live events. The system combines an ASP.NET Core web application with a MAUI Android field app, giving admins and supervisors a single source of truth across every touchpoint. Key capabilities include multi-customer and multi-venue management, role-based JWT authentication, opt-in live GPS tracking with an interactive map, emergency SOS alerts that instantly notify supervisors with last-known location, direct chat with photo attachments, targeted event info pages for specific staff types, and a rich photo-documentation gallery. The platform is architected for scale: one installation serves multiple customers, each with isolated data, configurable policies, and dedicated support tiers.