The steps I followed for Migration(VMs) to cloud
1- Download AWS CLI
2- Install AWS CLI
3- Get Access Keys to configure AWS CLI
4- Test Your Access
5- create role nane should be vmimport with relevent permission
6- Export The Virtual Machine
7- create bucket and upload image in side s3 bucket
8- Import The Virtual Machine
9- Access The Virtual Machine
10- test
The best reference is AWS Documentation.