As you start engineering bigger and bigger systems you'll start to discover that you sometimes need a complex solution to a big problem. The sticky point here

As you start engineering bigger and bigger systems you'll start to discover that you sometimes need a complex solution to a big problem. The sticky point here for some people is it requires you to hire actually talented people, and not rely on trendy methodologies focused around getting acceptable work from a larger pool of mediocre developers and sysadmins.