You plan to deploy multiple Azure virtual machines. How can you ensure the services they run remain available if a single data center fails? Choose two solutions. Each correct answer is a complete solution.

To ensure service availability during a single data center failure, you need redundancy at a geographic level. Deploying virtual machines across two or more Availability Zones within the same Azure region provides fault isolation from data center failures, as each zone is a physically separate location with independent power, cooling, and networking. For even greater resilience against widespread regional disasters, deploying virtual machines to two or more distinct Azure regions is the most robust solution. Deploying to two or more resource groups does not provide fault tolerance; resource groups are logical containers. Deploying to a scale set automates VM management and scaling but doesn't inherently protect against data center failures unless configured across Availability Zones.