Salesforce has planned a phased transition for retiring Workflow Rules and Process Builders. The first phase started with the Winter '23 release, during which the capability to create new Workflow Rules was turned off. In the upcoming Summer '23 release, the ability to create new processes in Process Builder will be disabled. Finally, in the last phase, both Workflow Rules and Process Builders will be completely discontinued, and automation on the platform will be carried out using Flow. This gradual approach aims to provide administrators with sufficient time to transition to Flow while minimizing the required effort for the migration process.