My company is currently evaluating several open source projects to help build out a new Software as a Service Platform (historically we never used anything open source) and we were wondering if we needed to disclose Open Source Notices on our actual website, i.e. under footer links for terms /conditions or legal or trademarks. Specifically, we are going to be using an open source project that falls under the Apache 2.0 license and the Apache 2.0 license states "(a) You must give any other recipients of the Work or Derivative Works a copy of this License". We also noticed that several companies, including Netflix, do disclose all open source projects used. We've also come across some other websites that do the same, however, it appears the majority of sites don't disclose on their website.
Any guidance / thoughts would be much appreciated!