EST · K-AI
EST · K-AI

ESTsoft signs MOU with 4by4 for AI technology collaboration… advancing its global AI SaaS

▶ The two companies will collaborate by making mutual use of each other's AI technology, strengthening their AI business capabilities ▶ Work will cover image quality improvement and file size reduction for PERSO.ai, and participation in VTuber production at a 4by4 subsidiary ▶ CEO Chung Sang-won: we will deliver results across both companies' business areas and strengthen our global AI SaaS competitiveness

▶ The two companies will collaborate by making mutual use of each other's AI technology, strengthening their AI business capabilities ▶ Work will cover image quality improvement and file size reduction for PERSO.ai, and participation in VTuber production at a 4by4 subsidiary ▶ CEO Chung Sang-won: we will deliver results across both companies' business areas and strengthen our global AI SaaS competitiveness

ESTsoft signs MOU with 4by4 for AI technology collaboration… advancing its global AI SaaS
ESTsoft signs MOU with 4by4 for AI technology collaboration… advancing its global AI SaaS

▲ ESTsoft CEO Chung Sang-won (left) and 4by4 CEO Yoon Jun-ho pose for a photo after signing a memorandum of understanding on mutual AI technology cooperation and business advancement. (Provided by ESTsoft)

ESTsoft is an AI Agentic Company: simple technology that makes every day easier.

ESTsoft Corp.CEO: Sangwon Jung

EST Building, 3 Banpo-daero, Seocho-gu, Seoul 06711, KoreaTel: +82-2-583-4620

Business Registration No. 229-81-03214Verify business infoE-commerce Registration No. 2011-Seoul Seocho-1962

© 2026 ESTsoft Corp.

EST Family

ESTsoft is an AI Agentic Company: simple technology that makes every day easier.

ESTsoft Corp.CEO: Sangwon Jung

EST Building, 3 Banpo-daero, Seocho-gu, Seoul 06711, KoreaTel: +82-2-583-4620

Business Registration No. 229-81-03214Verify business infoE-commerce Registration No. 2011-Seoul Seocho-1962

© 2026 ESTsoft Corp.

EST Family

ESTsoft is an AI Agentic Company: simple technology that makes every day easier.

ESTsoft Corp.CEO: Sangwon Jung

EST Building, 3 Banpo-daero, Seocho-gu, Seoul 06711, KoreaTel: +82-2-583-4620

Business Registration No. 229-81-03214Verify business infoE-commerce Registration No. 2011-Seoul Seocho-1962

© 2026 ESTsoft Corp.

EST Family

ESTsoft is an AI Agentic Company: simple technology that makes every day easier.

ESTsoft Corp.CEO: Sangwon Jung

EST Building, 3 Banpo-daero, Seocho-gu, Seoul 06711, KoreaTel: +82-2-583-4620

Business Registration No. 229-81-03214Verify business infoE-commerce Registration No. 2011-Seoul Seocho-1962

© 2026 ESTsoft Corp.

EST Family