When you are launching a product or a new version of a product the actual release can be exciting. However from a development perspective it should be much simpler. Turn on a feature flag and check a few logs.
It can be exciting to see the numbers, but the technical process of go live should be as dull as you can make it. You should have tested all of the possible failure modes up front and the system knows how to handle them (or tell you via the logs that it needs help).
There will be some small issues with integrations that can’t be tested in advance, especially when the partners production system does not work exactly in the same way as the test system.
My employer went live with two partners over the last two days!
Developer Rants 