Seokchan "Channy" Yun (윤석찬; born January 19, 1973) is a South Korean technologist. He promotes Web standards for Web compatibility issues in South Korea, with a particular focus on encouraging adoption of Firefox.^[1] He was an invited expert in W3C and contributed Web standards such as HTML5^[2] and Web cryptography API.^[3] He also founded WebStandards Korea^[4] as a member of the International Liaison Group of Web Standards Project, which is an active advocate for Web standards and best practices either in their country of origin or domicile.^[5]

Yun is known as one of the powerful voices of open-source software on Twitter, according to Chris Preimesberger of eWeek, who described him as "one of South Korea's top tech writers".^[6] Yun is a well-known technical writer that maintains his own blog, having written over 50 columns on ZDNet Korea,^[7] and was Asian editorial adviser of Lift Conference Asia. He was one of the founders of BarCamp Seoul and WebAppsCon.

He formerly held the position of CTO of Nine4u [ko], South Korea's first Korean online music & radio service,^[8] before joining Daum Communications, the operator of the Daum web portal. At Daum, he was a API evangelist, supporting third-party developers using Daum's Open API^[9] and started the first Korean Open-source software class as an adjunct professor, Dept. of Computer Engineering, at Jeju National University.^[10]

He researched big data analysis with semantic web and medical informatics at Seoul National University^[11] and focused on the Open-source software strategy of Big Data at Daum.^[12]

He now works for Amazon Web Services as a technical evangelist in South Korea^[13] and is an author of the AWS News Blog,^[14] writing launch posts for new AWS services.

He is also known as the first Korean YouTube video uploader on August 9, 2005.^[15]

• Channy's blog, official blog