In general, for commercial companies, internal use is considered commercial use, regardless of the purpose. Therefore, it is not allowed to use software that is prohibited for commercial use within the company. However, for example, some license conditions prohibit the sale of software for a fee, but allow internal use by the company.
On the other hand, if you are a non-profit organization, you can use it internally. However, even among non-profit organizations, there are cases where the organizations that can use the service are limited, for example, NPOs can use the service, but governmental organizations are not eligible.
Please check for any additional explanations regarding "commercial use" in this way before making your decision.