The ongoing maintenance, management, conversion, enhancement and support of an application portfolio by an external company. AMO, a subset of application outsourcing (see separate entry), includes changes that generally take less than some predefined time to implement (e.g., 10 days or 30 days). Examples of maintenance include regulatory changes, software upgrades, new release installations and “fix it if it breaks” troubleshooting. AMO may involve the transfer of people and application software to the vendor.