Series: Building Cloud Call Centres with Vonage APIs — Day 1 of 30

What is a Cloud Call Centre? A Developer's Introduction with Vonage 👋 Who Is This For? Whether you're a backend developer being handed a brief to "build a contact centre", a solutions architect evaluating CCaaS platforms, or a curious engineer who has never touched telephony before — this series is for you. Over 30 posts, we'll go from zero to production-ready cloud call centre , using Vonage APIs as our backbone. We'll cover voice, SMS, WhatsApp, web chat, AI/IVR, analytics, security, and DevOps — with real code, real diagrams, and real decisions. Today we start at the very beginning: What exactly is a cloud call centre, and why does Vonage make it a uniquely developer-friendly choice? 📞 Traditional Call Centres vs Cloud Call Centres Before we write a single line of code, let's understand the problem we're solving. The Old World: On-Premise PBX A traditional call centre looked like this: ┌─────────────────────────────────────────────────┐ │ ON-PREMISE CALL CENTRE │ │ │ │ PSTN Lines ──