To create complex apps–such as those where you log users into your product automatically when accessing it through Business Center–you can use Integrations. This is accessible from Vendor Center > App Name > App Information > Integration.
To begin integrating, you will need to ensure the Use Integration toggle is toggled on. Each section of this page contains a link to specific information on how to integrate.
It should be noted that integrations–including webhooks and SSOs–require developmental work on your app's end to function. Only users familiar with these concepts should attempt to use these advanced integration options.
If you would like to explore our integration options, please see our documentation.