The document discusses the Audit Oversight Board's 2015 annual report. It notes that the increasing number of registered individual auditors and decreasing partnerships with less than two partners indicates improved commitment to capacity building and succession planning among audit firms. This reinforces the firms' ability to take on more complex clients. The report also discusses promoting high quality auditing practices, including issues with the effectiveness of the engagement quality control review process at major firms and other audit firms. It provides examples of enforcement actions taken, including reprimands and registration revocations.