The Osalla Framework is a five-stage curriculum-development methodology for converting specialist knowledge, professional experience, and existing content into structured digital learning. It responds to a recurring design problem: valuable expertise is rarely organised for learner progression, assessment, accessibility, or scalable delivery. The Framework begins by clarifying the knowledge that matters, then establishes the curriculum’s intellectual sequence before aligning outcomes, instruction, and evidence. Learning experiences are engineered only after that alignment is established, and the completed system is then validated for coherence, usability, accessibility, and implementation readiness. The intended result is not a simplified version of expert knowledge, but a teachable structure that preserves its authority while making learning observable and usable. It is intended for educators, education professionals, subject-matter experts, and curriculum practitioners developing structured e-learning.