Ernst & Young is a professional services firm headquartered in London that provides advisory, assurance, tax, and transaction advisory services. To address attrition issues, the company maintains a central knowledge repository so that new employees have access to the same knowledge as experienced employees and do not face problems when handling projects. Knowledge is transferred through internal and corporate training programs, the central repository, business partner training, and specific certification programs. Tacit and explicit knowledge is gathered, stored in the central repository, and shared via employee IDs. The repository knowledge is then used in applications and certifications. The company has thousands of online training modules that employees can choose from to help with growth and knowledge absorption, which helps retain employees.