E-MapReduce (EMR) provides an integrated solution to manage clusters, which frees you up from the complex management of clusters. EMR has some practical strength over self-managed clusters.
Ease of use
You can create a cluster as required and release it if it is no longer needed. You can also dynamically add a node to a cluster.
EMR is integrated with other Alibaba Cloud services such as Object Storage Service (OSS), Message Service (MNS), ApsaraDB Relational Database Service (RDS), and MaxCompute. This enables these services to act as the input source or output destination of the Hadoop or Spark compute engine in EMR.
EMR is integrated with Resource Access Management (RAM), which allows you to use Alibaba Cloud accounts and RAM users to isolate permissions on services.