I usually summarize strategy with an acronym: VIP.
V stands for value. What is your value proposal? How are you going to create value beyond costs in order to make profits? What is your business model?
I stands for imitation. Can your value proposal resist imitation from competitors? How do you differentiate? What is your competitive advantage?
And P stands for parameter. On which market are you going to implement your value proposal? What are going to be the scope and the positioning of your company? What are you going to in-source and out-source?
VIP are the three fundamental dimensions of strategy. And in essence, a strategy class consists in exploring these three dimensions.