With a free Azure account and subscription, you can build, test, and deploy enterprise applications, create custom web and mobile experiences, and gain insights from your data through machine learning and powerful analytics.
Azure Account
The first step to using Azure is to sign up. You may sign up directly through Azure.com, with the help of a Microsoft representative, or through a partner. If you’re new to Azure, you may sign up for an Azure free account to start exploring with $200 USD free credit and free services. The email address that you provide when you create an Azure subscription is the Azure account for the subscription. The party that’s associated with the email account is responsible for the monthly costs that are incurred by the resources in the subscription. When you create an Azure account, you provide contact information and billing details, like a credit card. You can use the same Azure account (email address) for multiple subscriptions. Each subscription is associated with only one Azure account
Azure Subscription
Access control in Azure starts from a billing perspective. The actual owner of an Azure account – accessed by visiting the Azure Accounts Center – is the Account Administrator (AA). Subscriptions are a container for billing, but they also act as a security boundary. Each Azure resource is associated with only one subscription. Creating a subscription is the first step in adopting Azure.
You can create multiple subscriptions under a single Azure account. This is particularly useful for businesses because access control and billing occur at the subscription level, not the account level.
Azure Tenant
A Tenant is a dedicated and trusted instance of Azure AD that’s automatically created when your organization signs up for a Microsoft cloud service subscription, such as Microsoft Azure, Microsoft Intune, or Office 365. An Azure tenant represents a single organization.
Azure Active Directory
Azure account is a globally unique entity that gives you access to your Azure subscriptions and services. Authentication for your account is performed using Azure Active Directory (Azure AD). Azure AD is a modern identity provider that supports multiple authentication protocols to secure applications and services in the cloud. Every Azure subscription has a trust relationship with at least one Azure AD instance. This means that a subscription trusts that directory to authenticate users, services, and devices.
Subscriptions should have a trust relationship with at exactly one Azure Active Directory. But an Azure Active Directory can have trusts with multiple subscriptions but a subscription can only trust a single Azure Active Directory.
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