# Introduction Gigastore is a platform for reselling eSIM-based mobile data packages, which enables new and existing businesses to offer mobile data to their customers through a website or app. We offer a wide range of mobile data packages based on coverage (supported countries), validity (days), and volume (amount of Gigabytes) so you can address your customer needs. The mobile data packages can be installed by eSIM-capable devices and used immediately in the supported countries. No SIM card shipping is needed. To learn more about the Tunz eSIM, download the DENT App and try our eSIM service: . --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.giga.store/introduction.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.