# Vendor Diversifikasyonu, Failover, Maliyet Yönetimi

> Source: https://sukruyusufkaya.com/learn/prompt-engineering/pe-73-vendor-failover
> Updated: 2026-08-18T13:15:18.466Z
> Category: Prompt Engineering
> Module: 12. Üretim ve Ölçeklendirme
**TLDR:** Tek vendor riski. Multi-vendor abstraction (LiteLLM, LangChain). Failover, cost-based routing, vendor outage scenarios.