Mission
Our core purpose and reason for existence. (Who we are & seek to do everyday)
Vision
Our long-term goal or aspiration of an organization (What do we want to see in the world?)
Strategy
Our plan to achieve our long-term goals, while creating a sustainable competitive advantage (Where do we play and how do we win?)
I recommend keeping this high level - a few bullets / maybe a visual - and 🔗 linking to more detailed artifacts as needed 💡 I like Gibson Biddle’s approach of asking: “How will your product delight customers, in hard-to-copy, margin-enhancing ways?” Read more . 💡 Another good prompt is: “What are our unique superpowers and how do they intersect with customer needs?”
Mission & Vision Examples
Mission: "To organize the world's information and make it universally accessible and useful.” Vision: "To provide access to the world's information in one click.” Mission: “To accelerate the world's transition to sustainable energy.” Vision: “To create the most compelling car company of the 21st century.” Mission: "To empower every person and every organization on the planet to achieve more.” Vision: "To create a more personal computing experience for individuals.” 
Our North Star