@Phillip Wesley Hill Azure free subscription cannot be extended, you will have to convert your azure account to pay as you go to continue using the account. The $200 credit expires after the first month, but you can continue to use services under free tier for the first 12 months or upgrade to pay-as-you-go and still use the services under free tier. If you are using the services only for training purposes free tier of resources should be enough to complete the trainings. Upgrading to pay-as-you-go allows you to use your account with more benefits that is only billed if there is usage beyond free limits.
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