The key requirements of ISO 9001:2015 include addressing seven key areas or clauses: Context of the organization, Leadership, Planning, Support, Operation, Performance evaluation, and Improvement. Compared to the previous version, ISO 9001:2015 introduced a risk-based approach, eliminated mandatory procedures, and added clauses about the context and interested parties. It also expects more commitment from top management and no longer requires a management representative or a quality manual. The structure changed from 8 to 10 clauses, aligning better with other standards like ISO 14001 and ISO 27001.