The only way this wouldn’t meet the definition of ‘execution’ is if it were an accidental shooting, which I find hard to believe when it involved 2 dead. Are you confusing the word ‘execution’ with ‘assassination’, which would imply there was both planning and pre-selection of the targets? No one is saying this was an assassination.
Are you just talking about dynamic DNS services for one or a few home servers?
There’s always DynDNS, but that’s a paid service. I actually discovered that dynamic IP address service was provided free by Google when using Google Domains as the registrar, so I moved a few of my private domains over to Google several years ago to save myself $55 a year.
Unfortunately, Google Domains is shutting down and all registrar services and existing customer domains are getting moved to squarespace and I’ve not yet been able to determine if squarespace is going to be offering the free dynamic DNS service or not.