The standardization of the Agent-to-Agent (A2A) protocol is catalyzing a paradigm revolution in platform economics. This paper systematically examines the fundamental reconstruction of traditional B2B and C2C platform architectures in the era of autonomous agent interconnectivity. For B2B platforms, we propose that each enterprise should deploy multiple types of ambassador agents (sales agents, fundraising agents, supply chain agents, etc.), thereby giving rise to a novel service industry termed A4B (Agent for Business)—defined as a category of third-party service providers that build, deploy, and govern enterprise-grade AI agents on behalf of client organizations. We further demonstrate the necessity of encryption and blockchain technologies in protecting client data privacy. We argue that the traditional interactive interfaces of B2B platforms will tend toward dissolution, replaced by classification directories based on agent discovery protocols. The unprecedented information transparency in the agent era will fundamentally suppress commercial dishonesty, creating conditions for the comprehensive implementation of RWA (Real World Asset tokenization). For C2C platforms, we analyze the Agent-based matchmaking paradigm in online dating, the C2A (Consumer-to-Agent) on-demand content delivery mechanism in short-video platforms—defined as a content distribution model in which consumer-side agents proactively declare demand to supplier-side agents, replacing platform-mediated passive recommendation—and the novel credit scoring system enabled by personal data transparency. At the theoretical level, we construct an extended two-sided market model with moral hazard and principal-agent incentive compatibility constraints, formally deriving the separation conditions for honesty equilibrium. This paper aims to provide a unified analytical framework for understanding the evolution of platform economics in the A2A era and outlines directions for future research.
Bin Wang (Sun,) studied this question.