Are we there yet?
Of course not. Even if you were to commit yourself to mastering the 100+ services AWS currently has online, by the time you were half done, there would probably be at least a handful of new ones. And that’s not including the dozens of new service features added each month.
Having said that, if you’ve worked through the entire book—following along with the demos and labs in each chapter on your own AWS account—then you’re not doing too badly. You may still lack the confidence that comes with lots of experience, but lack of experience is a condition with a simple cure. Think problems through carefully, plan ahead, and dive in. Rinse and repeat.
Here are a few ideas about where you might want to go ...