Utilize the input text as a context reference, choose the right relationship between Harvey Norman and retail from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Mr Robbiati led a diversification strategy into business leasing and acquisition of new credit card and consumer rental business ThinkSmart, as well as investing in digital technology in line with its big retail customers, such as Harvey Norman and Dick Smith.

Answer: industry