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/