A talk I gave at Meet Magento Belgium 2017: https://be.meet-magento.com/presentation/manipulating-magento-make-want/
How can you make Magento do what you want? In Magento 2 there are a lot of ways to add customizations. What are your options? Can you do a rewrite like in Magento 1? Should you use an event to add that business-critical logic when your invoice reaches state paid? Or is a plugin a better option? Maybe it’s the only option. What’s the deal with dependency injection and why do I need interfaces? In this talk we’re going to explore all the possibilities.