A micro server (may also be written as microserver or MicroServer) is a small server appliance that works like a server. Micro servers are off-the-shelf appliances that are designed for ease of installation and maintenance. A micro server will come with the operating system, hardware and software preinstalled and configured by the manufacturer. Some configuration functions of the micro server may be performed by the end-user through a touch panel and access to the server appliance is through a Web browser.
A micro server is a popular choice for small- to medium-sized businesses that need a server but do not need a full-scale rack or tower server. Micro servers are also used by corporations that operate with minimal IT staff at local or branch offices.
A micro server may also be called a server appliance.