CLB and GWLB are applicable to different use cases. You can choose one based on your use case. For differences between the two products, see Product Feature Comparison.
What Else Do I Need to Configure After Creating a GWLB Instance?
1. Create a GWLB endpoint service. Note that the service type should be selected as GWLB. Then bind it to the specified GWLB instance. For details, see Creating an Endpoint Service.
2. Create an endpoint. Note that the selected endpoint service ID is for the GWLB endpoint service created in step 1. For details, see Creating an Endpoint.
3. In the EIP console, select the specified purchased EIP address and associate it with the endpoint created in step 2.