br Salesforce middleware development using Heroku involves creating custom applications and integrations to connect Salesforce with other systems and services. Heroku, a cloud platform as a service (PaaS), provides tools and infrastructure for building, deploying, and scaling applications. By leveraging Heroku, developers can seamlessly integrate Salesforce with external databases, APIs, and applications, enabling real-time data synchronization, process automation, and enhanced functionality within the Salesforce ecosystem.