Are there rest api's available for process & task operations for Camunda 8 like there were for Camunda 7?

How do we navigate through a process in Camunda 8 using rest api’s. I have not found any documentation suggestive of api’s. Only option that I see is the OOB tasklist or a job worker.

In Camunda 8 there no more an exhaustive REST API for working with processes, instances, tasks like in Camunda 7.

Instead, we have gRPC API to work with process instances, a REST API to work with OPERATE data, and a GraphQL to work with tasks (search, claim, complete)