I've gotten through the first seven courses. I can't recall but I remember seeing somewhere that course 8 - which is the portfolio project - is optional. I started the data analytics course when I was a procurement associate and now work at a freight brokerage. I haven't really touched an excel sheet in a meaningful way in months, but I started this course and I want to finish it just for my own personal achievement of being able to say I finished something. Do I need to complete the final course in order to get a digital certificate that says I've completed the entire thing? Or is each individual course's certificate the only documentation I'll receive/there won't be an overarching online cert for completing all of them?