which two aspects of continuous delivery pipeline require the most involvement from product managers

The question above is a topic on the Continuous Delivery Pipeline which is done to limit errors in the automation of software from stages they are tested to a more complete production stage for end-users. There are four aspects in the Continuous Delivery Pipeline starting from the Continuous Exploration aspect and ending with the Release on Demand aspect while having Continuous Integration and Continuous Deployment as the second and third aspects respectively.

Release on Demand and Continuous Exploration requires the most involvement from product managers as:

Release on Demand makes product managers focus on how new production is strategically always available for end-users based on demand. This makes product managers have the awareness of the performance and demand of their products in the market.

Furthermore, Continuous Exploration needs product managers as this aspect is crucial in the birthing of new products for the market. This requires product study, market research, and other tasks for product managers.

While the other two stages need the involvement of product managers less as these stages move from the implementation of ideas and Integration of products to ready for deployment of products to end-users.