Recent AI engineering signals point to a practical lesson: huge context windows help, but reliable AI apps still need context budgets, retrieval, caching, and security checks.

Recent AI engineering signals point to a practical lesson: huge context windows help, but reliable AI apps still need context budgets, retrieval, caching, and security checks.

How to give AI agents the right context: RAG vs. agentic RAG, MCP, agent memory, and semantic caching explained. A practical FAQ for engineering teams.