The program code in your own hands may have security holes or backdoor permissions, and there is a risk that attackers or hackers will steal sensitive data. The locally built server may also be at risk of having the database phone number russian stolen by a slightly technical employee.
Therefore, local deployment cannot be absolutely secure.
When choosing between SaaS online deployment and local deployment, enterprises should consider their specific needs, budget, security, customization, data control requirements, and future expansion plans. For application scenarios that require rapid deployment, low cost, easy access, and no customization, SaaS online deployment may be more appropriate; while for enterprises that have high requirements for data control and customization, have more important security considerations, have a higher initial investment budget, and can afford maintenance and update costs, local deployment may be more suitable.