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Summary
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When the decision is made to migrate applications to a cloud like [VMware Cloud on AWS](https://cloud.vmware.com/vmc-aws?int_cid=70134000001CaZ5&src=WWW_us_VMW_0cnHu1FmS2pidRE57WJU) (VMC on AWS), a few things need to happen. First and foremost, insight into your applications and application behavior is critical. One of the perks of migration to a public cloud is that you can choose the optimal location to make sure your end-users benefit. But, without networking insights, this is often overlooked. Below is a checklist of the list of documentation to gather from the client during the discovery and planning phase of a VMC engagement.

Checklist
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**Current State Landing Zone (or) Control Tower  
**

-  VPC Structure  
-  Connectivity -  Architecture Design -  Security Groups -  Disaster recovery -  Regions and Availability Zones -  Organizations -  Account structure

**Portfolio**

-  Previous Application Discovery tool's output  
-  RVtools Output -  Customer's CMDB (e.g. ServiceNow) -  vRealize Network Insight tool installation pre-requisites -  Application Owners identified -  Portfolio of applications (or) virtual machines for migration -  Business critical applications

**Operations**

-  Change Management - Change Request Board (CRB) and Change Advisory Board(CAB) -  Problem and Incident Management -  Monitoring and logging tools -  Application decommissioning process -  Reporting requirements

**Security**

-  Data governance policy -  Encryption in-transit and in-flight -  Laws and regulations adherence based on customer's business -  Review security posture

**VMware on AWS**

-  Existence of an SDDC -  Use of VPN vs. Direct Connect pre- and post-migration -  Subnets for Management and Compute networks -  Existence Virtual Distributed Switch (vDS) -  Current on-premises vCenter version -  Cluster organization in on-premises vCenter -  Total data requirement (sum of data in TB of all the virtual machines)

 **Attachments:**