---
title: "Buying and Subscribing"
description: "Plans, add-ons per line of business, what counts as a change and how quotas work, how to subscribe, billing and support levels."
source: "https://help.rikaiso.com/public-cloud/2026.2/buying-and-subscribing"
edition: "public-cloud"
editionLabel: "S/4HANA Public Cloud"
version: "2026.2"
latest: true
language: "en"
updated: "2026-11-05"
---

# Buying and Subscribing

> Plans, add-ons per line of business, what counts as a change and how quotas work, how to subscribe, billing and support levels.

> **Draft brief for authors.** Section page.

Everything a buyer and a subscriber administrator need before and at the subscription: plans, add-ons, changes and quotas, subscribing, term and billing, security at a glance, FAQ.

## In this section

- [Plans: Beta, Trial and Ultimate](https://help.rikaiso.com/public-cloud/2026.2/plans.md): What each plan includes, who can choose it, how it starts and ends, and how to switch between the Trial and the Ultimate Edition.
- [Add-Ons: Lines of Business and What They Include](https://help.rikaiso.com/public-cloud/2026.2/add-ons.md): What each add-on covers today and what is announced, which apps, tiles and role collections it brings, and how bundles are priced.
- [Changes, Quotas and Volume Bands](https://help.rikaiso.com/public-cloud/2026.2/changes-and-quotas.md): What counts as a change, what is free, where the use is shown, what happens at the limit, and how volume bands and extensions work.
- [Subscribing to RIKAISO MDM](https://help.rikaiso.com/public-cloud/2026.2/subscribing.md): How to subscribe in the SAP BTP cockpit or through a direct contract, what the subscription creates in your subaccount, and what unsubscribing removes.
- [Term, Billing and Support Levels](https://help.rikaiso.com/public-cloud/2026.2/billing-and-support.md): The 12-month term, annual invoicing, SAP Store billing where offered, taxes, and the difference between e-mail and priority support.
- [Security, Data Residency and Compliance at a Glance](https://help.rikaiso.com/public-cloud/2026.2/security-overview.md): One isolated tenant per customer, master data that stays in SAP, what MDM stores and for how long, sign-in through your identity provider, audit logging and certifications.
- [Buying FAQ](https://help.rikaiso.com/public-cloud/2026.2/buying-faq.md): Short answers to the questions buyers ask before they subscribe.