Open Data is digital data that is made available with the technical and legal characteristics necessary for it to be freely used, reused, and redistributed by anyone, anytime and anywhere.
Digital data, in this context, is machine readable data, such as CSV, XML, JSON, Shapefiles, APIs. Unlike human readable formats, such as PDFs, HTML pages; machine readable data can be re-purposed, synthesized and modelled by computer applications to generate insights, analyses and/or used to develop web/mobile applications.
_________________
What is Open Data? (2017, November 14). City of Toronto; City of Toronto. https://www.toronto.ca/city-government/data-research-maps/open-data/what-is-open-data/