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.

As you know, we also announced on June 1 the sale of most of our data centers to global data center operator Equinix in an all-cash transaction valued at just over $1 billion.

Answer: product_or_material_produced