Columbus, Ohio has a generally strong and diverse economy based on education, insurance, banking, fashion, defense, aviation, food, logistics, steel, energy, medical research, health care, hospitality, retail, and technology. Overall, it was ranked as one of the top 10 best big cities in the country in 2010, according to Relocate America, a real estate research firm. In 2015 Columbus was named by the Intelligent Community Forum as one of the seven top Smart Cities in the world.