Good point. Since I don?t have enough information about your company?s requirements, but the size of 100 people, I suggest you a very pragmatic approach of paying a 3rd party company to provide you remote and on-site service (this case, on-demand).
This situation is as long as your company accepts this kind of service support. I?m not saying this is a wreck solution. It works fine, but you get what you pay for.
Security issues regarding remote access to your environment can be solved with technology (point-to-point links, VPN,...).
The challenge is finding a company that could fit your budget, based on Executive Staff expectations. You can deal SLA with your service provider regarding scheduled and non-scheduled actions, as well as the amount of effort the monthly cost is covering.
Consider that an interim solution. It can last as long as it fits business constraints.
It?s really hard to let Executive Staff understand how complex are IT activities and this is not an one-man-show, but in other hand, it doesn?t make any sense to have IT structure with significant costs compared with business structure.
It?s easier for you to manage a service provider than manage an undersized poor broad skilled IT staff.
Let me know if this worked well for you.
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