Application support refers to the services provided to ensure that a software application is functioning properly and efficiently. Application support is an important aspect of IT operations, and it helps organizations to ensure that their systems are reliable, available, and performing at optimal levels.

Application support can include a wide range of services, such as:

• Troubleshooting and problem resolution: Identifying, analyzing, and resolving issues related to the software application.
• Maintenance and updates: Installing software updates and patches, performing maintenance, and monitoring the performance of the application.
• Configuration and customization: Making changes to the application's settings and configurations to meet the specific needs of the organization.
• User support: Providing assistance to users of the application, including training, documentation, and helpdesk support.
• Compliance and security: Ensuring that the application is in compliance with relevant laws and regulations, as well as maintaining the security of the application and the data it stores.

Application support can be provided in different ways:

• In-house support: An organization may have its own IT department to provide application support for the software applications used by the company.
• Third-party support: An organization may contract a third-party company to provide application support services.
• Cloud-based support: For applications running on cloud-based infrastructure, the provider of the service will typically also provide the necessary application support.

Having adequate application support is critical to ensuring that software applications are functioning properly and efficiently, and to help organizations to maximize their return on investment in software systems. With an effective application support, it will help to minimize downtime, reduce costs, and improve the overall performance and stability of the software systems.