360i于1998年在亚特兰大由Dave Williams和Bryan Kujawski创立，是一家搜索引擎营销机构和网络品牌技术公司。它后来被Innovation Interactive公司收购。 当时，360i的机构有35人，其搜索引擎技术业务有15人，收入接近500万美元。

360i被收购后，成为一家以数字为主导的传播机构 

Innovation Interactive于2010年被电通公司以2.75亿美元的价格收购，现在仍然是电通公司的一个部门。Bryan Wiener一直担任360i的首席执行官，直到2014年2月，由萨拉-霍夫斯泰特（Sarah Hofstetter）接任，她从2005年起就是360i的高管，是该公司社交媒体和战略业务的创始人。2018年，在Bryan Wiener转到comScore担任首席执行官后，Sarah Hofstetter被提升为主席。 同年，总裁贾里德-贝尔斯基（Jared Belsky）被提升为首席执行官，CMO阿比-克拉森（Abbey Klaassen）被提升为纽约总裁。

360i在2013年、2014年和2015年被评为MediaPost OMMA "年度数字机构"，并在2013年、2014年、2015年、2016年、2018年和2019年进入《广告时代 Ad Age A List》A榜。2018年2月，360i被评为《广告周刊Adweek》年度突破性媒体机构。该机构还被评为2019年Campaign的25大最具影响力机构之一。

360i was founded in 1998 in Atlanta by Dave Williams and Bryan Kujawski  as a search engine marketing agency and technology company for online brands. It was later acquired by Innovation Interactive.  At the time, 360i had 35 people in the agency and 15 people in its SearchIgnite technology business with revenue of close to $5 million. 

360i was acquired as a digitally-led communications agency 

Innovation Interactive was acquired by Dentsu in 2010 for $275mm  and remains a unit of Dentsu, Inc. Bryan Wiener remained CEO of 360i until February 2014 and was succeeded by Sarah Hofstetter,  a 360i executive since 2005 and the founder of the firm's social media and strategy practices. In 2018, Hofstetter was promoted to Chairwoman following Bryan Wiener's move to comScore as CEO.  That same year, President Jared Belsky was promoted to CEO, and CMO Abbey Klaassen was promoted to President, New York. 

The agency was named a Leader in The Forrester Wave: Performance Marketing Agencies, Q3 2019and a Leader in The Forrester Wave: Search Marketing Agencies, Q1 2016 report by Forrester Research ."360i was named a MediaPost OMMA "Digital Agency of the Year" in 2013, 2014, and 2015, and made the Ad Age A List in 2013, 2014, 2015, 2016, 2018 and 2019. In February 2018, 360i was named Adweek's Breakthrough Media Agency of the Year.The agency was also named as one of Campaign's Top 25 Most Influential Agencies in 2019.