What characterizes Scrum as a methodology? Given the limited information on the project you have available, what would be the potential advantages and disadvantages of applying Scrum as an execution strategy?

$2$ If a pure Scrum methodology is not going to be used in this project, how can a reorganization project like this apply agile methods and elements, while at the same time including the decision gates $($milestones$)$ for the project?

$3$ What would be potential critical elements for succeeding with an agile execution strategy for this type of project?