Application Support refers to providing assistance, troubleshooting and maintenance services for software applications. This can include helping users with technical issues related to installing, configuring or using an application, as well as providing updates, patches and bug fixes to keep the software running smoothly. Application support may also involve training users on how to use the application effectively, as well as providing guidance on best practices for optimizing its performance. In essence, it is a type of customer service that focuses specifically on helping users get the most out of their software applications.