# Vendor Diversifikasyonu, Failover, Maliyet Yönetimi

> Source: https://sukruyusufkaya.com/en/learn/prompt-engineering/pe-73-vendor-failover
> Updated: 2026-05-11T13:17:32.023Z
> Category: Prompt Engineering
> Module: 12. Üretim ve Ölçeklendirme
**TLDR:** Tek vendor riski. Multi-vendor abstraction (LiteLLM, LangChain). Failover, cost-based routing, vendor outage scenarios.