I concur, my experience too. Cultural differences is a big one. Both for the finished product, and with regards to organisation costs which are often invisible,

I concur, my experience too. Cultural differences is a big one. Both for the finished product, and with regards to organisation costs which are often invisible, just felt and never accounted for with numbers. I'm less familiar with 4. But seen many cases of data leaks. It's very challenging to figure out the purpose, competing is only one.