Method, systems, and apparatus for generating an online storefront for a merchant, comprising receiving, by an inventory management system (IMS) and from a point of sale (POS) device, an indication of a user input to a first graphical user interface (GUI) representing a merchant request to generate the online storefront comprising one or more second GUIs; generating and activating the online storefront; retrieving inventory data associated with the merchant; transmitting, to a customer device, a second GUI that includes item information; receiving a customer request to purchase an item; transmitting, to a payment service system (PSS) that manages the IMS, the customer request; receiving an indication that the payment has been processed by the PSS; receiving a command from the PSS to update the inventory data; receiving a request from the POS device to deactivate the online storefront; and removing the customer device's access to the online storefront.