The document summarizes a presentation about the OData protocol given by Jorge Gonçalves and Manuel Costa. OData provides a standardized way to expose and consume data via RESTful web services. It allows data from various sources to be unlocked and queried using HTTP, JSON, and other web technologies. The presentation covered the basics of OData, how to create and consume OData services using .NET, and various OData client options for JavaScript, Excel, and LightSwitch. Questions from attendees were invited at the end.