It's a huge company with more than a million employees around the world. That's good but also, there's a lot of paths to reach to something (or someone) you need . There's a lot of Standard Operating Procedures and there's also a lot of missing SOPs. Sometimes you can find a lack of information and it's a extreame "do it yourself" / "sel-service" company. Amazon is bureaucratic and it's amazing philosophy sometimes needs to be reinforced in front of so many different cultures, sectors and work levels. Be prepared to work a lot with reduced teams.