The Splunk App Framework resides within Splunk's webserver and enables you to customize the Splunk Web UI that comes with the product and build Splunk apps that use the Splunk web server. The Splunk SDKs are designed to enable you to build applications from the ground up and not require Splunk Web or any components from the Splunk App Framework. The Splunk App Framework is part of the features and functionality of the Splunk Software and using those features and functionality there is no modification to the Splunk Software licensed to you. The SDKs are separately licensed (open source) to you from the Splunk Software and does not modify the Splunk Software.
Developer FAQs here - dev.splunk.com/view/SP-CAAADRT
The Splunk App Framework resides within Splunk's webserver and enables you to customize the Splunk Web UI that comes with the product and build Splunk apps that use the Splunk web server. The Splunk SDKs are designed to enable you to build applications from the ground up and not require Splunk Web or any components from the Splunk App Framework. The Splunk App Framework is part of the features and functionality of the Splunk Software and using those features and functionality there is no modification to the Splunk Software licensed to you. The SDKs are separately licensed (open source) to you from the Splunk Software and does not modify the Splunk Software.
Developer FAQs here - dev.splunk.com/view/SP-CAAADRT
I was asked this question from a customer this morning.