It created enterprise software products for supply chain, business rule management, visualization and optimization.

It developed, marketed, sold and supported BRMS, optimization and visualization software components, as well as supply chain applications.

ILOG customers use them to make visualization interfaces (Views) and resources allocation applications (Solver).

In 1995, the company started to expand globally by establishing a major sales presence in the United States and Asia.

In the late 1990s, ILOG started to introduce Java versions of its products to follow once again the software industry’s technical evolution.

The financial services sector has been the primary market for ILOG's BRMS products, for use in developing, for example, online trading or credit decision making applications.

Until ILOG's initial public offering in 1997 on the NASDAQ National Market (which subsequently became the Nasdaq Stock Market on August 1, 2006), ILOG was financed through a combination of retained earnings, venture capital funding and interest free loans from French government agencies and the European Union.

On April 11, 2007, ILOG completed the acquisition of LogicTools, a Chicago-based provider of supply chain planning applications specializing in network design and inventory optimization.