Research three posted job positions. They may be from different job boards such as Indeed, LinkedIn, or Glassdoor. Summarize each job posting, and explain what the common elements

Research three posted job positions. They may be from different job boards such as Indeed, LinkedIn, or Glassdoor. Summarize each job posting, and explain what the common elements are that employers are seeking. Describe the types of certifications or professional credentials that are required, and indicate which are preferred. Finally, summarize the application process, and note if they are different based on the job positions.