Our company uses multiple SaaS applications. There is one SaaS that maintains a list of all projects the company is currently working on. There is another SaaS that has a list of all servers hosted in the company. There are many more such SaaS applications. They all either expose an API or provide an export of certain key data maintained in the application.
When creating tickets in Jira, we would like some fields to have a dropdown with the options coming from data obtained from these SaaS applications. For example, when creating a ticket related to software upgrade, the user should be able to choose from among the server names obtained from the SaaS application.
In short, we would like to create fields that are integrated with the SaaS applications. What is the best way to do this?