The document announces a Salesforce Apex Hours event about modular application development using unlocked packages, with speakers Mohith Shrivastava and Amit Chaudhary. The agenda covers introducing unlocked packages and different package types, building and publishing unlocked packages using Salesforce CLI, creating dependencies between packages, and a Q&A session. Unlocked packages allow developers to build modular applications by breaking a monolithic application into separate packages that define dependencies.