Utilize the input text as a context reference, choose the right relationship between Equinix and Data center 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.

Content preferences Done Data center major Equinix Inc. EQIX is in an expansion mode.

Answer: product_or_material_produced