Instructional design, also known as instructional systems design, is the analysis of learning needs and systematic development of instruction.
From Unpacking Learning Design
Learning Design can be broadly described as a philosophical approach to the design of learning environments and learning resources which aim to foster deep learning by engaging learners in authentic, active and interactive learning experiences.
The term "learning design" is used to describe the body of work that would come out from the shift in focus when pedagogy focus on the learner in stead of the skill of the teacher (Unlearning pedagogy):
formal education erred in focusing on the skills of the teacher, when it was the learner who ought to be the centre and focus of pedagogy