Because Pulsar and Kafka both use Zookeeper, the operational complexity will largely be the same. The best thing you can do to lower op complexity is using managed Kafka by Confluent or AWS (something similar probably exists for pulsar).
Yeah was just gonna suggest either any one of AWS's queue services (SQS / Kinesis or MSK), or GCP (Cloud Pub/Sub / Managed Kafka). A quick search yields Azure Queue Storage(?) as a potential hosted option