https://alp.consulting/what-is-payroll-outsourcing-and-how-does-it-work/
Payroll outsourcing is a business practice in which a company contracts with a third-party service provider to handle various aspects of its payroll processing and administration. This means that the employer delegates payroll-related tasks to an external organization, often a payroll service provider or a professional employer organization (PEO). These service providers specialize in managing payroll functions and ensuring compliance with tax and labor laws, relieving the employer of the burdens and complexities associated with payroll processing.