Final answer:
An API (Application Programming Interface) is used to provide connectivity to other systems such as Salesforce.com or the JavaMessagingQueue.
Step-by-step explanation:
The technology used to provide connectivity to other systems such as Salesforce.com or the JavaMessagingQueue is called an API (Application Programming Interface).
An API is a set of rules and protocols that allows different software systems to communicate and interact with each other. It provides a way for developers to access the functionality and data of another system without needing to understand the intricacies of how that system works internally.
For example, Salesforce.com provides a REST API that allows developers to integrate their own applications with Salesforce and access and manipulate data within the Salesforce platform.