# Detailed business case
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A detailed, multi-year business migration case that includes current on-premises costs, new AWS costs, and migration costs helps align stakeholders and executives.

**Objectives**
+ Determine migration costs.
+ Estimate how much you can save by migrating to AWS.
+ Estimate other business benefits of migrating.
+ Determine the length of the target migration.
+ Determine which workloads you will migrate and in which year.
+ Input the detailed inventory for each workload.

**Outcomes**
+ Multi-year migration business case
+ Migration costs

**AWS Partners and tools**

AWS Partners such as RISC Networks, Deloitte, Cloudamize, TSO Logic, and Apptio have tools and experience in this area.