These are three considerations that an Integration Architect should consider when recommending Platform Event as an Integration solution. Platform Events are a type of event-driven architecture thatallows you to publish and subscribe to custom events in Salesforce and external systems. Platform Events have some limitations and features that an Integration Architect should be aware of, such as:
Inability to query event messages using SOQL. Platform Events are not stored in Salesforce database, but in an event bus that retains them for 24 hours. You cannot use SOQL to query event messages, but you can use the EventLogFile object or the Event Monitoring feature to access them.
Inability to create a Lightning record page for platform events. Platform Events are not standard or custom objects, but a special type of sObject that can be inserted into the event bus. You cannot create a Lightning record page for platform events, but you can use Apex triggers, Lightning web components, or CometD clients to subscribe to them.
When you delete an event definition, it’s permanently removed and can’t be restored. An event definition is a metadata type that defines the schema and properties of a platform event message.You can create or modify event definitions in Salesforce Setup or using Metadata API. However, if you delete an event definition, it’s permanently removed from your org and can’t be restored. You also lose access to any event messages that use that eventdefinition.
[References: Certification - Integration Architect - Trailhead, [Platform Events Developer Guide], , ]
