You get an exemption from VCP level exams (2 of) and an exemption from having to meet the training requirement usually associated with VCP level certfications.

You will need to pass the VCAP Deploy exam AND the VCAP Design exam (which gives your VCIX) in order to apply for the VCDX process.

• Choose the Cisco path here: VMware Certified Advanced Professional — Network Virtualization Deployment 2020
• The Cisco path here: VMware Certified Advanced Professional — Network Virtualization Design 2020
• And the no VCDX path here: VMware Certified Design Expert - Network Virtualization 2020