Book excerpt: Organizational Semiotics: Evolving a Science of Information Systems covers such issues as: -Fundamental concepts such as 'information', 'data', 'message', 'communication', 'knowledge', 'organization', 'system' and so on; -Properties of signs vital to organizational functioning, such as their meanings, the intentions they express and the valuable social consequences they produce; -'Architecture' of organizations when they are viewed as information systems, based on their semiotics features; -Understanding language in organizational contexts, for example, the limitations on the language used to conduct business affairs; -The empirical study of communications for requirements elicitation; -Applying semiotic categories (e.g. physical, empiric, syntactic, semantic, pragmatic, social) to various problems; -Organizational knowledge representation; -Business process re-engineering methods and the design of e-commerce systems.