Great collection of BTP FAQs:
SAP BTP FAQs – Part 1 (General Topics in SAP BTP)
SAP BTP FAQs – Part 2 (Application Development, Programming Models and Multitenancy)
SAP BTP FAQs – Part 3 (Security)
In the Configure Custom Navigation
settings, you can define different places where an external application (for example, a link to a side-by-side application) should be visible.