retellai-migration-deep-dive

Execute Retell AI major re-architecture and migration strategies with strangler fig pattern. Use when migrating to or from Retell AI, performing major version upgrades, or re-platforming existing integrations to Retell AI. Trigger with phrases like "migrate retellai", "retellai migration", "switch to retellai", "retellai replatform", "retellai upgrade major".