Software development companies usually have such expertise. Freelancers may be a cost-effective option for certain projects too. Yet, they are not the best choice for developing complex apps. Such software requires a high level of complexity and customization. It is a task for developers, designers, PMs and BAs. Freelancers may not have expertise to execute such large-scale projects by their own. Additionally, managing a team of freelancers is time-consuming and difficult. It may lead to communication breakdowns, delays, and potential security issues. We would recommend considering outsourcing such enterprise app development service to skilled professionals.