Talisen International is the subsidiary of Talisen Technologies Inc. based in the United States. Talisen's smart city integration software platform enables centralized aggregation of multiple data streams and technology systems to enable Big Data analytics for smart buildings.The platform provides enterprise visibility and control across a building portfolio allowing the building owners to identify and implement energy management strategies to reduce the cost of energy, operations and maintenance.The Enterprise Sustainability Platform (ESP) leverages the Internet of Things (IoT) and Big Data to build a product-agnostic, single portal view of information for various stakeholders in a smart city.