Utilize the input text as a context reference, choose the right relationship between Instacart and delivery 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.

Curbside pickup and last mile delivery services like Instacart grew the fastest, resulting in more than 90% of our e-commerce business going through our in-store fridge network.

Answer: industry