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+https://aws.amazon.com/rds/
+https://aws.amazon.com/rds/features/#administration
+https://docs.microsoft.com/en-us/azure/mariadb/concepts-supported-versions
+https://cloud.google.com/sql/pricing
+https://calculator.aws/#/createCalculator/RDSMariaDB
+https://azure.microsoft.com/en-us/pricing/calculator/
+https://aws.amazon.com/about-aws/whats-new/2019/06/rds-storage-auto-scaling/
+https://aws.amazon.com/blogs/database/scaling-your-amazon-rds-instance-vertically-and-horizontally/
+https://cloud.google.com/architecture/elastically-scaling-your-mysql-environment
+https://techcommunity.microsoft.com/t5/azure-database-support-blog/how-to-auto-scale-azure-sql-databases/ba-p/2235441
+https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Storage.html
+https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
+https://docs.microsoft.com/en-us/azure/security/fundamentals/encryption-overview
+https://cloud.google.com/security/encryption/default-encryption
+https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.Encryption.html
+https://cloud.google.com/compute/docs/regions-zones
+https://docs.microsoft.com/en-us/azure/availability-zones/az-overview
+https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.RegionsAndAvailabilityZones.html
+https://azure.microsoft.com/en-us/pricing/details/bandwidth/
+https://aws.amazon.com/ec2/pricing/on-demand/
+https://cloud.google.com/vpc/network-pricing
+https://azure.microsoft.com/en-us/pricing/details/azure-sql-database/single/
+https://azure.microsoft.com/en-us/pricing/details/azure-sql-managed-instance/single/