Hi @Mahavir Saroj,
Welcome to Microsoft Q&A Forum, thank you for posting your query here!
Limitations and known issues
below links has the step-by-step process and limitations for 2008
https://learn.microsoft.com/en-us/azure/migrate/vmware/prepare-for-agentless-migration
let us know if you have any further queries. I’m happy to assist you further.
Please do not forget to "Accept the answer” wherever the information provided helps you, this can be beneficial to other community members.