Final answer:
Azure free accounts expire after a specific period, typically 30 days or after the provided credit is used up, requiring an upgrade to a paid subscription for continued service use.
Step-by-step explanation:
All Azure free accounts expire after a specific period. When you sign up for an Azure free account, you are given a limited amount of credit to spend within the first 30 days. However, it is essential to understand that the Azure free account has certain limitations. After the initial 30-day period or once you have exhausted your credit, whichever occurs first, you will need to upgrade to a paid subscription to continue using Azure services.