Employee engagement surveys are used to get a pulse on the current state of employees, and hopefully used to take action and improve employee performance. As a large organization your employee engagement survey should give you a sense of your most engaged divisions, countries, and employees. Based on the employee survey results, action items can be taken to ensure your employees are the most engaged.
There are lots of survey technology providers in the space. Historically, the large enterprise level survey providers tout their content rather than their technology. The largest survey providers have a benchmark database with millions of responses, broken down by country, demographics, and many other factors.