  Modern platform software delivery cost increases rapidly as it usually needs
to align with many hardware and silicon's TTMs, feature evolvement and involves
hundreds of engineers. In this paper, citing one ultra-large-scale software -
Intel Media Driver as an example, we analyze the hotspots leading to delivery
cost increase in continuous software development, the challenges on our
software design and our experiences on software delivery cost shrink against
the targeted design enhancements. We expect the identified hotspots can help
more researchers to form the corresponding research agendas and the experiences
shared can help following practitioners to apply similar enhancements.
