Develop eNSLookUp, a sophisticated service that provides real-time ENS domain data resolution query using AWS API Gateway tech and Lambda functions, featuring DNS-ENS cross-reference, ENS text record retrieval, and ENS-based API authentication. Detailed Architecture and Features

API Gateway and Lambda Functions: AWS API Gateway will serve as the front-end interface for all API requests. AWS Lambda, a serverless computing service, will handle backend processing, including interaction with ENS and Ethereum blockchain. Benefits include scalability, reduced operational overhead, and seamless integration.

Cross-Reference Database:
    A dedicated database that integrates DNS and ENS domain data.
    Will help in identifying if a DNS domain has an ENS counterpart.
    Useful for users and businesses looking to maintain brand consistency across traditional and blockchain domains.

ENS Text Record Retrieval:
    Functionality to extract additional information (like email, URL, avatar, etc.) from ENS text records.
    Enhances the utility of the service, providing more than just address resolution.

ENS-Based API Authentication:
    Incorporates ENS names as a secure and innovative method for authenticating API requests.
    Enhances security by leveraging blockchain technology.
    Positions the service at the forefront of decentralized authentication methods.