What is cognos?

Cognos is a Business Intelligence Tool capable of creating dashboards, reports, analysis in all your reporting requirements. 

Cognos is a Reporting , Dashboarding tool from IBM.
It is basically an Business Intelligence tool.
It allows to create Cubes, Transaction report, ad hoc report and lot of analysis with visually appealing reports.

IBM Cognos is business intelligence (BI) and performance management (PM) software.

Cognos is introduced by IBM and it’s a software to manage, extract and assemble data in order to analyze it and can also help a user present data in a report form.
Its an important portfolio analysis tool and can help segment the portfolio to find out problem points and identify revenue generation opportunities.

First we need to understand what is Business Intelligence.
Business intelligence (BI) is a set of theories, methodologies, processes, architectures, and technologies that transform raw data into meaningful and useful information for business purposes like Operation strategy and financial performance .
IBM Cognos is a top-notch Business Intelligence software that provides what your organization needs to become top-performing and analytics-driven,  to help everyone in the organization make decisions that achieve better business outcomes—for now and in the future.