Here is a 150 word summary of the blog post:

The blog post compares using Rust versus Typescript for AWS Lambda functions. It implements Hello World, Fibonacci number calculation, and DynamoDB query functions in both languages. Rust has better runtime performance - up to 4x faster for the DynamoDB function and 82x faster for Fibonacci. However, Typescript has clearer, simpler code - 52 lines versus 93 lines for the DynamoDB function. Rust functions also use less memory and show lower deviation in runtime. Operative costs are lower for Rust, especially for CPU-heavy functions, although the base Lambda cost remains. Overall, Rust has better performance while Typescript has better code clarity and debuggability within AWS. The post concludes that Rust shows promise for Lambda functions given its speed, but it remains to be seen whether it will become more popular given the extra complexity.