From the course: AWS Certified DevOps Engineer - Professional (DOP-C02) Exam Tips

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Multi-AZ vs. multi-region architectures

Multi-AZ vs. multi-region architectures - Amazon Web Services (AWS) Tutorial

From the course: AWS Certified DevOps Engineer - Professional (DOP-C02) Exam Tips

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Multi-AZ vs. multi-region architectures

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Multi-az or Multiple Availability zone deployment is a strategy used to enhance the resilience and availability of AWS services across multiple data centers, or AZs. EFS, ELB, ASG, Beanstalk. These services allows you to choose which AZs you want to deploy in for high availability. RDS and ElasticCache features a multi-AZ. Setup for synchronous standby databases, aiding in failover scenarios with Aurora data is automatically distributed across AZs, but instances must be spread across AZs or Multi-az capability. OpenSearch and Jenkins offer multi master settings, but deployments across multiple AZs are necessary. Amazon S3, DynamoDB and other managed services inherently operate across multiple AZs for high availability. In a three tier architecture, public and private subnets are utilized for different tiers. The application load balancer that is ALB is spread request across multiple subnets in VPCs and AZs. Target groups extend across multiple AZs, allowing traffic distribution. RDS…

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