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AWS DataSync is the service that is recommended for online data transfer from your on-premises data centre to AWS. Recently this service has added new feature that can help customers migrate data from GCP to AWS without any custom code. For more details check below: https://aws.amazon.com/blogs/storage/migrating-google-cloud-storage-to-amazon-s3-using-aws-datasync/

Organization can scale out write performance for their database across multiple availability zones by configuring Amazon Aurora multi-master cluster. In multi-master cluster, all database instances can perform write operations. Thus one instance becomes unavailable, another database instance is immediately available to take over the work of the failed instance. This is referred as continuous availability.

AWS service scope falls into 3 categories: • Global service: A service configured & deployed globally. Eg. Route 53, IAM, CloudFront, SES • Regionals service: A service configured & deployed regionally. Multi-AZ RDS deployment, ELB, Auto-scaling, S3, DynamoDB • Zonal service: A service configured & deployed in a single zone. EC2 AWS service scope is an important consideration when designing solutions architectures. It affects application scalability, availability, performance, operational efficiency, cost & regulatory compliance. For your convenience this is also available on YouTube at: AWS Service Scope