Google's Agent2Agent (A2A) protocol is designed to facilitate communication and collaboration between AI agents, enabling them to work together on tasks regardless of their origins or frameworks. This open protocol, launched with the support of over 50 technology partners, aims to standardize agent interactions much like HTTP does for web communication, allowing agents to communicate over standard web protocols such as HTTP using structured JSON messages. A2A consists of several core components, including Agent Cards and A2A Clients and Servers, which help manage tasks and facilitate seamless multi-agent collaborations. It operates alongside Anthropic’s Model Context Protocol (MCP) to solve the integration challenges in AI ecosystems, with A2A focusing on horizontal agent-to-agent interactions, while MCP handles vertical integration with tools and data sources. Security is a priority, with A2A using opaque agents and existing web security standards to ensure secure communications. As adoption of A2A grows, it promises to reduce integration costs and encourage innovation, potentially becoming a pivotal tool for AI development akin to the role of HTTP in web communication.