"Should we build our voice agent or use an off-the-shelf platform?" Wrong question. Here's the real one: 𝗛𝗼𝘄 𝗱𝗲𝗲𝗽 𝗱𝗼𝗲𝘀 𝗶𝘁 𝗻𝗲𝗲𝗱 𝘁𝗼 𝗿𝗲𝗮𝗰𝗵 𝗶𝗻𝘁𝗼 𝘆𝗼𝘂𝗿 𝘀𝘆𝘀𝘁𝗲𝗺𝘀? If the agent just answers FAQs, buy a platform. You don't need me, and I'll tell you that for free. If the agent has to read live inventory, write to your DMS, take a payment, and respect business rules that change every quarter, the "off-the-shelf" tool becomes a cage about six weeks in. You'll spend more fighting its limits than you'd have spent building around them. The honest answer depends entirely on integration depth. Anyone who gives you a blanket "always build" or "always buy" is selling, not advising.