You can find all information around Microsoft License Mobility on Microsoft.com.
Here are some fundamentals:
A1 is certified as a qualified partner for Microsoft license mobility.
License mobility does not capture any Windows server operating system. This means that the Windows Server license must always be provided by the hosting provider. Exception: dedicated server resources.
Licensing of server applications (which are under Software Assurance) may be ported under certain conditions.
The Virtual Server offering does not provide Microsoft applications.
Please note that you are responsible for the correct licensing of applications installed on the Virtual Server platform, especially for compliance with the Microsoft guidelines.
Linux containers (LXC) share the operating system kernel of a single Linux OS installation. An LXC encapsulates applications and their operating environment, such as process trees, network, user IDs, etc.
Key differences between VM and LXC:
Disk space requirements in the range of gigabytes
Requires a classic boot (boot) of the operating system, apps load several minutes
Memory requirements in the range of megabytes
Operating system is already booted (booted), apps are almost immediately available.
Benefit: Immediately install, move to other virtual servers, share, or re-enable older packages
Disadvantage: One operating system instance must handle many containers simultaneously. Therefore, this technology is limited in performance.
For applications with medium and high performance requirements, A1 recommends using virtual machines.
On Marketplace Control Panel à Home à Account à Subscriptions
Select the VPS that you want to upgrade (marked as “Trail period”)
Switch to the CCPv1 view (link in orange area)
Eventually, you may have to choose the right subscription on top of the screen (drop-down).
Still in the top of the screen you will see a notification, how long your Trail is valid until expiration à click on „Upgrade“
Under the header “Store” click on “Upgrade to Paid service”
Upon upgrade, you will be notified to pay for the service in advance. First charge will be for the remaining days of the trail period. After that you will be billed recurrently based on the chosen binding period.
Please log on to the marketplace control panel, choose "Account", then click on "Contracts". Select the desired contract. Here you will find the possibility to cancel the contract. Please note that your contract contains a binding and therefore no refunds are made.