The choice of the right IT supplier or consulting firm depends on the skills of the IT professionals involved. Today, it is very difficult for non-IT persons to differentiate the various and complex degrees and certificates - not to mention the difficulty to validate practice and the ethical professionalism of offered IT specialists.
In future, look for the label Expert FSIE™. These are the specialists who have a proven and up-to-date educational track, know how to apply it and adhere to a concise ethical code. From project manager/business analyst (sub-specialised per industry) to engineering (sub-specialised per technology), UX and security: you will find specialists that are able to take-over complex tasks. Furthermore, they fulfil and document to standards that are understood by all experts FSIE and, hence, minimize single-person dependencies.