Understanding types of AIF services in AX 2012

Dynamics AX 2012 offers different type of services that can be used to perform several operations. It is very important to understand which type of service should be used to perform your desired operation.

There are 3 types of services that are available in Microsoft Dynamics AX 2012.

1. Document Services
• Document services are services which expose a business entity. For example, Customer, Vendor, Employee, Sales Order.
• You can Map the business entity using Query and run through Document Service Wizard to build the web service and perform CRUD operations.
2. Custom Services
• To expose a custom x++ logic. 
• Say, you have a custom module and you want to expose some logic/code to your custom application.
3. System Services
• System services are kind of utility services.
• Up and running when AOS starts.
• Can be used for interactive clients 
• Build Ad-hoc query