Agile and iterative methods like SCRUM or KANBAN are pretty much standard today when it comes to programming, but often the design process is stilly very old fashioned in comparison. The people at feedly.com wrote a really insightful article on how their design process works and what tools and services you can use to implement it in your company or project: https://medium.com/feedly-behind-the-curtain/the-art-of-iterating-quickly-a8403e8c52f4