  Interoperability is a significant challenge in blockchain technology,
hindering seamless data and service sharing across diverse blockchain networks.
This study introduces Automated Gateways as a novel framework leveraging smart
contracts to facilitate interoperability. Unlike existing solutions, which
often require adopting new technologies or relying on external services,
Automated Gateways framework is integrated directly with a blockchain's core
infrastructure to enhance systems with built-in interoperability features. By
implementing fine-grained access control mechanisms, smart contracts within
this framework manage accessibility and authorization for cross-chain
interactions and facilitate streamlining the selective sharing of services
between blockchains. Our evaluation demonstrates the framework's capability to
handle cross-chain interactions efficiently, significantly reduce operational
complexities, and uphold transactional integrity and security across different
blockchain networks. With its focus on user-friendliness, self-managed
permissions, and independence from external platforms, this framework is
designed to achieve broader adoption within the blockchain community.
