What CIO should do in first month on new job!

That is interesting topics. Usually there is two options, you can be promoted in-house or you are coming from outside. My opinion is that there is no different.
First what you should do is talk to Management board or shareholders and try to understand what is important for them. Try to understand why they  change previous CIO. Are they want to change something or want continuity.
Second talk to your new managers. By the book approach will be to run SWAT analysis. Don't underestimate SWAT. This is opportunity for managers to present themselves and for you to understand dependencies. SWAT analysis will deliver tasks as outcome. Prioritize tasks and group them in short and long term. Within tasks look at all aspects of organization: people, infrastructure and processes.
Third but most important is to introduce yourself to your coworkers. In following posts I'll explain in more details how this presentation should look like but in general it should consist of your work history and experience, things that are important to you and what are your expectations from others.
In communication be transparent, more listen then talk in that period. Set control mechanism (somebody like to call it KPI's) for your managers. In that way you will be able to track progress.
This are instructions for so called normal situation. If you jump in middle of crises you should act based on commands. Prepare execution plan, communicate it to all and start to execute. Be sure that end point is realistic and reachable in sense period.

Strong personalities have their own plan but if you follow this instructions you will achieve your goal.

Diagram: What CIO should do in first month on new job!

What CIO should do in first month on new job!