It is important to fully test a managed service before moving forward with a new vendor. You can use the following spreadsheet to know what to test and how to test it.
Aiven for Apache Kafka Proof of Concept Checklist
The linked document includes the following sections:
Functionality testing
Performance testing
Operations and management
User access
Integrations
Schema registry
Note: As of version 3.0, Aiven for Apache Kafka no longer supports Confluent Schema Registry. For more information, see this article that describes the replacement, Karapace.Multi-cluster via MirrorMaker
REST proxy
Make a copy of the document to keep track of your Aiven for Apache Kafka POC phase. Aiven is happy to collaborate with you during your evaluation phase and answer any questions. Reach out to sales@aiven.io with any questions or to set up a call with a solutions architect.