I agree it's probably an area of focus/responsibility.
I can also see how it could also be a 'project' if it's fairly simple and you know all the steps etc (it ends in a year, no?
)
It may be subjective - if it feels 'overwhelming' as a project and if you often don't know what to do and where to start, where to find things, how to prioritize etc, it's probably an area of focus with smaller projects.
The distinction between 'project' and AoF (and other horizons) was EXTREMELY helpful to me!!
You probably have routines to eg update software (this could be an ongoing project or 'maintenance' if it's fairly simple) or keep track of things and people's plans or wishes (school calendar, events).
A project under the 'maintain/update website' AoF might be 'move to another platform' or 'add pics from the Science day' (if someone else has taken them and you need to first identify or locate that person - anything more than one step) or 'add teachers' photos' (with possible steps or NAs such as 'get names of all the teachers' or names of any new teachers, 'get pics of all the teachers' - from teachers, school secretary or the photographer/s and maybe a checklist for this if needed - this could actually be a mini project, if you need pics from different people, or arrange for a photographer to visit first) or 'get content for the _specific part/s of the site_' if you are the one who puts it on and other people write it (if there are eg blogs that teachers/school admins update themselves it's easier)...
A maintenance activity could be to evaluate the site each week (maybe as part of weekly review?) and see if anything needs to be done, talk to teachers/people also working on this (usually tech teachers) maybe monthly or weekly.. It's better to perhaps ask people in advance what they would like and clarify expectations than get any 'explosions' later when things weren't done the way they imagined it.. (You could ask teachers, headmaster, parents, kids.. what they'd like to see - depends again how much energy and time you have for this?
And how important it is, what has been done already.. If it's new or fairly well set up, loved and appreciated and used with success?)
Also, as stuff comes into your inbox, do you process it first?