Explain what SDLC is and why we use it$.$ Provide a general overview of what "Agile" means and compare it to Waterfall. Explain what SCRUM is and how it relates to agile. Describe the process of requirements gathering. Explain what a user story is$,$and what specific points it should include. Describe what the backlog is and how it gets prioritized. Describe what a sprint is and the major parts of a sprint cycle. Describe what a wireframe is and what it accomplishes. Describe the structure of a daily scrum meeting. Explain what Pivotal Tracker is and what problem it solves.