The Model Context Protocol (MCP) is an open standard introduced by Anthropic in November 2024, designed to connect AI models to real-world data and systems, addressing the challenge of fragmented integrations and data silos. MCP serves as a universal interface that allows AI models to interact with diverse external tools and data sources without requiring custom integrations, solving the "M×N integration problem" by standardizing connections. It acts as an "AI USB port" for seamless integration and organizes interactions into three standardized primitives: tools, resources, and prompts. The protocol ensures local-first security, requiring explicit user approval for tool access, and aims to enhance AI models' context awareness by allowing access to real-time data. While MCP offers benefits like standardized integration and dynamic tool discovery, challenges such as engineering complexity, performance overhead, scalability, and authentication issues remain. Despite these challenges, MCP presents a significant advancement in enabling more capable and context-aware AI applications by facilitating easier and more secure integration with external data sources.