ISO 9001:2015 is an international standard which defines the minimum requirements for the quality management system. It is part of an overall family of Standards known as ISO 9000ff. ISO 9001 standard is applicable to any type of business and companies of all sizes and can help organisations to provide consistent products and services leading to customer satisfaction, regulatory compliance and continual improvement. It is the most popular, best-selling and best-known standard in the world and the only standard in the ISO 9000 family to which organizations can certify. Since the first edition in 1987, there have been several revisions of ISO 9001 standard, and the last revision was made in 2015. The valid version of ISO 9001 standard was released in September 2015 and changes made in requirements of ISO 9001:2015 are much more significant than those made in the 2008 revision. The main changes are in structure of ISO 9001:2015, where the number of chapters increased from 8 to 10 and in completely new requirements which include context of organization, risk management, knowledge as resource and leadership. There were great expectations from these changes, and the paper explain whether these changes achieved the expected results on quality.