Pusher (Beams)

Pusher (via their 'Beams' product) is an incredibly sleek, heavily armored leviathan that mathematically dominates the "Transactional Developer Push" market. Marketers use Braze. Engineers building ride-hailing apps or chat systems use Pusher Beams. It is the absolute weapon of choice for hardcore backend developers who mathematically require a bulletproof, real-time WebSocket infrastructure to instantly push critical transactional alerts (like 'Your Uber has arrived') with zero latency.