The Database Migration Service of AWS is based in the cloud and is an optimized way to migrate databases to AWS. It may either be from on-premises servers to the cloud or from one cloud provider to another. Data can be replicated with high availability and several databases consolidated into one petabyte-sized one by streaming data to Amazon Redshift or Amazon S3.

There are several other benefits of AWS database migration service that play a very important role in improving database management.

•All infrastructure needed for migration is deployed and managed automatically by the AWS database migration service. Once the system is configured for migration, it can be started in minutes.

•The cloud environment offers flexible storage facilities. Users scale up and down in storage usage during migration whenever required by paying for the volume of storage resources used only. If additional storage is required, it is downloaded in minutes.

•Acritical benefit of the AWS database migration service is the automatic fail over and reversal feature. When an outage occurs in the primary server, the secondary servers in the region or any other location are triggered instantly. After the outage is resolved, the primary server is updated with the data that was transacted in the interim outage period and migration carries on as before. There is no data loss because of the outage.

•AWS database migration service provides managed database services from Amazon Relational Database Service or Amazon Aurora. Hence, organizations can migrate to a more optimized and suitable service than currently being used. These fully managed data warehouse services include Amazon Redshift and NoSQL platforms like Amazon Dynamo DB as well as the affordable Amazon S3.

•AWS DMS supports most of the popular DBMS engines as source and target databases. This makes it simpler to migrate from any source to target database.

•Most importantly, AWS database migration service ensures that the migration process is fully secured. Data at rest, that is in the source database is fully encrypted with the AWS Key Management Service. Data in flight that is, that moving from the source to the target database is secured with the Secure Socket Layers (SSL) encryption.

AWS database migration service enables two types of migration.

•Homogeneous database migration: This type of migration is done when there are several similarities in the source and the target databases, namely, the database engines, data codes, data types, and schema structures. Migration, therefore, is a simple one-step procedure.

•Heterogeneous database migration: This is carried out when the database engines, data codes, data types, and schema structures of the source and the target database engines are different. Hence, with the AWS Shema Conversion Tool, the schema and the data code of the source database have to be converted first to match that of the target database before proper migration can be started.

These are some of the facets of AWS database migration service.