First, evaluate the overall strength of the company.
A formal software development company generally needs this company to have its own R&D team. If it doesn't have its own development team, it will be subcontracted.
Second, from the company's actual development case, evaluate the company's technical strength.
Both large software development companies and small software development teams have their own development cases. Under normal circumstances, large enterprises have strict control over the comprehensive strength of software development companies, so it is generally not a big problem to choose software development companies that have cooperated with large enterprises.
Third, after-sales service
After the software development is completed, the customer service of the software development company will instruct the customer's technicians how to use the software background. Some software development companies will use telephone, computer remote assistance or on-site technical guidance to let customers easily understand how to use the background of operating software.