This is the 16372nd most frequent Russian word.
ресурсу
"Ресурсу" means "to the resource" or "for the resource" (dative case of "ресурс").
In this sentence, 'ресурсов' (resources) refers to financial means or assets the company needs to grow.
У компании недостаточно финансовых ресурсов для расширения.
The company lacks sufficient financial resources for expansion.
Here, 'ресурсом' (resource) is used metaphorically to describe public attention as a beneficial asset for activism.
Внимание общественности стало важным ресурсом для активистов.
Public attention has become an important resource for activists.
This usage of 'ресурсу' (resource) refers to a technical or digital asset utilized by the programmer.