Starbucks is Your coffee brand at home forever. 

When you order your iced coffee with no milk on it, Starbucks will thank you for this information about your iced coffee preference. Also, when you order your black tea with no sugar on it, Starbucks will take a not of this information. For example, Starbucks launched unsweetened black tea fro those who like their tea with no sugar on it and launched black iced coffee with no milk on it for those who like their iced coffee with no milk on it. This information about your coffee or drink preference may seem to you worthless, but for Starbucks it means treasure.

Starbucks collects data about how consumers like or order their coffee, tea, latte, and so on to target them with products that they know their consumers will like and buy it. The main purpose of collecting this kind of data is not to increase the sale at their stores. The purpose is to customized coffee based on the consumers’ drinking-coffee habits and sells it to them not only at the Starbucks stores but also at the grocery stores.

"It's a way for [Starbucks] to expand a brand that's already owning retail and bring it into consumer's homes," Tammy Katz, CEO, and founder of Katz Marketing Solutions told CNBC. "So, they can almost double consumption because consumers are going to want to drink it when they go to the actual Starbucks locations and now they have the freedom to drink it at home." 

In my personal opinion, this is very smart marketing tactics to make their consumers avoid any other coffee brands at homes. As long as a company serves consumers with products that are customized based on their buying behavior, the company is going to be at the top of the markets.