AWS Weekly Roundup: Project Rainier, Amazon CloudWatch investigations, AWS MCP servers, and more (June 30, 2025)

Every time I visit Seattle, the first thing that greets me at the airport is Mount Rainier. Did you know that the most innovative project at Amazon Web Services (AWS) is named after this mountain?

Project Rainier is a new project to create what is expected to be the world’s most powerful computer for training AI models across multiple data centers in the United Stages. Anthropic will develop the advanced versions of its Claude models with five times more computing power than its current largest training cluster.

The key technology powering Project Rainier is AWS custom-designed Trainium2 chips, which are specialized for the immense data processing required to train complex AI models. Thousands of these Trainium2 chips will be connected in a new type of Amazon EC2 UltraServer and EC2 UltraCluster architecture that allows ultra-fast communication and data sharing across the massive system.

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