In-house
Creating an internal IT team is not only about employing the right people and taking care of all the peripheral issues described above. It is primarily about building mutual understanding, bonds between developers, creating a specific work culture of an IT team, as well as gaining shared experience in dealing with difficult situations.
This means that even if you hire people who know how to build a perfect in-house team, it will take some time and effort before the communication, quality, and efficiency of work become optimal.
Outsourcing
It is much simpler and more effective at the same time to hire an external company. Software houses earn a living on creating and developing software. It is their core activity. Therefore, for such companies, developing the highest quality software is crucial to stay in business.
IT companies had to develop methods and procedures that allow them to maintain high quality in order to stay on the market. Whatsmore the outsourcing allows companies to choose an agency that, for example, has already built some similar apps and knows all the issues related to a given type of software. The key element is also the know-how and experience accumulated over the years and the knowledge of various challenges and problems that statistically must happen while working on any project. Some issues will occur. And it is not a problem, it is obvious. The thing is to have the right people who are ready and able to deal with them.