Fill in the blank: The open standard file format HubSpot uses to store and transmit data is ___.

In the HubSpot Data Integration certification, JSON (JavaScript Object Notation) is identified as the open standard file format used for storing and transmitting data because it is lightweight, human-readable, and language-independent. While HTML is used for web presentation and XML was historically common for enterprise systems, HubSpot’s modern REST APIs are built to return and accept JSON payloads to ensure maximum performance and compatibility with modern programming languages. By using JSON's structured {key:value} pairs and arrays, HubSpot enables developers to seamlessly exchange complex CRM data—such as contact properties and association metadata—between disparate systems in a format that is faster to parse and requires less bandwidth than more verbose alternatives.