From the Apache non-lawyer version of the license:
It requires you to:
include a copy of the license in any redistribution you may make that includes Apache software;
provide clear attribution to The Apache Software Foundation for any distributions that include Apache software.
The license itself clarifies derivative work:
For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof
My question is what feels like a common use case, but I'm not exactly sure where it fits into their license.
If I am using an Apache 2.0 licensed software purely as an API for an internal project (not modifying the licensed code at all), what are my responsibilities from a licensing perspective? It seems my work is not a "derivative work" since I am not modifying the actual code.
This link seems to suggest I only need to include it in a NOTICE file. Are there other obligations?
This feels like a really common use case but I can't seem to find much actually referencing this in any of the sources I quoted from?