Generate a very simple yet aesthetic logo for greenlight-it, an it company that specializes in software testing, quality assurance, agile, devops, coaching. the logo should convey a sense professionalism and communicate the company's focus on quality. the logo must be frontal and flat in the colours green and white, minimalistic, sophisticated and smart. {{{it should clearly contain a green traffic-light}}} {{{checkmark}}}, style of raymond loewy