Learning about these domains allows you to talk to people in them. That allows you to educate people outside of the development group on the specifics of the product and get valuable feedback from them. This allows you to make a better product and at the same time gives you a foundation for doing Biz Dev.
Design is a bit different, but yes - learn the basics of that too and treat designers and design work as development unless your business plan is cranking out logos and t-shirts.
Learning about these domains allows you to talk to people in them. That allows you to educate people outside of the development group on the specifics of the product and get valuable feedback from them. This allows you to make a better product and at the same time gives you a foundation for doing Biz Dev.
Design is a bit different, but yes - learn the basics of that too and treat designers and design work as development unless your business plan is cranking out logos and t-shirts.