Final answer:
Azure Security Center offers both Free and Standard tiers, each providing different levels of security features to cater to varying needs and budgets.
Step-by-step explanation:
Azure Security Center is available with two options: Standard and Free. The Free tier provides basic security features, whereas the Standard tier offers a more comprehensive set of security capabilities, such as advanced threat protection and detection. Users can choose which tier to use based on their security needs and budget constraints.