求问AWS ECS Nucleus 这个组怎么样？？

EC2 描述是酱紫的, 想问问这个组怎么样？比如工作主要是开发新产品还是做maintainence? oncall多不多，intern一般能做什么样的project??

The EC2 Nucleus team is responsible for the design and maintenance of all of Amazon's core compute platforms. We have aspecial focus on EC2, the Elastic Compute Cloud that is the basis for much of Amazon Web Services (AWS). We're also responsible for tools associated with the performance characterization, qualification, build and deployment of our platforms.

其他两个组是consumer marketing:

Our team owns all notification sending for Amazon and its subsidiaries. Notification sending includes emails, text messages, and mobile push notifications sent to mobile applications like the Amazon Shopping App, the MP3 App, and dozens of other Amazon-owned apps. For mobile push notifications, we own the workflow end-to-end: from planning which notifications are sent with machine learning algorithms to a real-time sending system that needs to scale to hundreds of millions of notifications a day, to the actual Android and iOS client code that needs to run on these devices to display the notifications and report metrics back into our platform. Our backend is built on numerous AWS services like EC2, S3, DynamoDB, SQS, and EMR. We use Hadoop/MapReduce for planning our notifications. In terms of programming languages, we mostly use Java, but we do own some client-side Android Java code and Objective C code as well.

和community shopping:

The Community Shopping team creates experiences to enable customers to help each other discover, evaluate and enjoy products on Amazon. These experiences include Reviews, Ask, Lists, Gifting, Profile, Follow, and Social Gamification. The Community Analytics and Community Trust teams power and support all of these experiences. We strive to drive daily customer engagement and inspire shopping decisions by leveraging the unique power and scale of the Amazon community, and connecting the community based on our deep knowledge of shared interests.

感觉剩下两个组个工作很边缘啊不是很核心的样子

求建议！