Outsourcing of administrative services consists in delegate or outsource to an external provider the administrative functions of your company.
If you manage an SME you should know that your time is valuable and that your company and your customers need constant attention. Why not delegate those functions that do not require your presence to an outside qualified company? In this way, you can spend more time on growing your business. Let administrative / accounting processes be performed by a much more specialized business organization in these functions.