The services of reliability and scalability are provided in Cognos platform that allowed easy performance of it at the application tier level on the peer-peer basis. The services allowed the request to be satisfied with the complete response of the request that has come. This service provides fault tolerance technique that allows the platform to be more stable during the error that might cause the damage. Dispatching of the request is done using the automatic response and load balancing feature that is built in the system. The service allows the platform to be more optimized, which allow the access to the data sources and it includes the data sources related to each other. Online analytical processing (OLAP) is used for queries that need to be processed. The services can be accessed through the web tier.   _{Your Comment}