> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-licensing-guide/v19/introduction.md).

# Introduction

This guide describes how to manage your Parallels® Remote Application Server (Parallels RAS) subscriptions and licenses. It begins with the information on how to purchase and upgrade licenses. It then describes how to sign up for a Parallels account and register a subscription. After that, it describes how to manage your account, subscriptions and licenses using your Parallels account.


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