**Abstract**

A generational change is taking place in building transportation systems as manufacturers and maintenance companies begin to integrate their products and services with the technologies of smart buildings and smart cities. Frequently this integration relies on the Internet of Things and cloud services. The diverse and heterogeneous nature of such collaborations requires a common shared semantic understanding of the complex and dense information that may be generated by transportation systems in buildings. The Standard Elevator Information Schema (SEIS) provides this in a format which is both machine and human readable. The role of the schema is to provide the 'vocabulary' for these collaborations. At the same time the schema specifies the properties, relationships and validation rules that define the information model, which could form the foundation upon which all elements of building transportation control and monitoring functions are constructed. SEIS is published under the Collective Commons licence and is free to download and incorporate into any product with the objective of reaching the broadest audience. This chapter discusses the origins and features of SEIS and provides a varied set of example applications. Consideration is also given to the issues of cyber security and data protection.

**Keywords:** lift, elevator, XML, XSD, schema, information model, IoT, REST
