Here is a 150 word summary of the blog post:

Amazon Verified Permissions is a fully managed authorization service that allows you to define fine-grained access control policies for your applications. Key concepts include the policy store which contains schemas and policies, the schema which defines allowed actions on resources, and policies which permit or deny access. The service supports role-based access control, attribute-based access control, and context-based policies. You can test policies using the built-in Test Bench. The post walks through an example schema, policies, and Test Bench validation for a fictional superhero management application. It shows Terraform code to deploy the policy store and schema. Upcoming posts will cover integrating Amazon Verified Permissions into applications using different strategies and connecting it with Amazon Cognito and AWS CloudTrail.