They saved $800K on their AWS bill, but - may spend $250K on servers, replaced after 3 years becomes $83k/yr - may spend $120-250K on extra staff to ma

They saved $800K on their AWS bill, but - may spend $250K on servers, replaced after 3 years becomes $83k/yr - may spend $120-250K on extra staff to maintain the infrastructure - may spend $15K for a cage in a DC They still save $452K/yr overall (actual savings 1st year only $285K). It's still a savings for sure, but always keep TCO in mind. The real fun comes later when you outgrow your cage and there's not enough space left in that DC, or they just have shitty service constantly knocking out your racks, and you have to consider splitting your infra between DCs (a huge rewrite) or moving DCs (a huge literal lift and shift). Have been part of both, it's... definitely a learning experience.