What technologies, tools, and development methods should be used to create corporate software? What are the peculiarities of this process and what should be considered when deve

I am planning to launch my own startup, which will be engaged in corporate software development. I would like to ask other forum participants about their experience in this area. What technologies, tools, and development methods should be used to create corporate software? What are the peculiarities of this process and what should be considered when developing such applications? Are there any better tools for developing scalable and secure enterprise applications?