The thing that an organization claims it wants to achieve.
The thing that an organization thinks to itself it aims to achieve, which can be different from the public claim in an adversarial context.
The thing that different subunits of the organization think they (‘they’ the subunit, or ‘they’ the organization) aim to achieve.
The thing than an organization is in practice optimizing for as a result of its internal and external pressures, which can be different from both publicly and privately stated goals because coordinating an organization in a chaotic world is hard.
Going through your examples, Meta is an organization whose public claim is different from its real goals because its real goals are unpopular. Hospitals are organization whose purpose is what they says it is, but some of their people have to optimize so hard for some instrumental goals (e.g. collecting money) that these instrumental goals get a life of their own. Political parties started like hospitals but ended more like Meta : the instrumental goals (e.g. power-seeking) took so much importance than now there are only power-seekers left in the leadership, and thus the stated goals of the parties have become different from their private goal.
There is :
The thing that an organization claims it wants to achieve.
The thing that an organization thinks to itself it aims to achieve, which can be different from the public claim in an adversarial context.
The thing that different subunits of the organization think they (‘they’ the subunit, or ‘they’ the organization) aim to achieve.
The thing than an organization is in practice optimizing for as a result of its internal and external pressures, which can be different from both publicly and privately stated goals because coordinating an organization in a chaotic world is hard.
Going through your examples, Meta is an organization whose public claim is different from its real goals because its real goals are unpopular. Hospitals are organization whose purpose is what they says it is, but some of their people have to optimize so hard for some instrumental goals (e.g. collecting money) that these instrumental goals get a life of their own. Political parties started like hospitals but ended more like Meta : the instrumental goals (e.g. power-seeking) took so much importance than now there are only power-seekers left in the leadership, and thus the stated goals of the parties have become different from their private goal.