Total Cost of Ownership(TCO) includes:

Infrastructure Costs

Procuring Servers, Databases, Storage, Routers ..

Infrastructure maintenance costs

Licensing Costs (Software + Hardware)

Networking Costs (Connection cost + Data Ingress + Data Egress)

Personnel Costs (Dev + Test + Ops + Business + ..)

Other Costs:

Penalties for missed SLAs or Compliance needs

Third Party APIs

Electricity costs

When designing solutions (or migrating to cloud), ensure

that you take Total Cost of Ownership(TCO) into account!

Compare Apples to Apples!