JSIKTI: Journal of Information Systems and Applied Computer Technology Indonesia, Volume 4 Number 3 (March 2022) presents a series of applied information system studies contributed by Universitas Pendidikan Ganesha and STMIK STIKOM Indonesia. This issue highlights developments in environmental analysis, financial information systems, data mining–based prediction models, sales and inventory management systems, and customer relationship analytics.

The articles include an air pollution direction and reach prediction study using Windrose analysis, the development of a web-based financial information system for CV. Tiga Mestika, and a product sales prediction model using the K-Nearest Neighbor data mining method at PT. Terang Abadi Raya. Additional contributions feature a sales and inventory information system for PT. Bali Murni, as well as an analysis of Customer Relationship Management (CRM) using Power Business Intelligence (BI) tools for PT. Terang Abadi Raya.

This issue reflects the collaborative effort of both institutions to deliver impactful research and practical technological solutions. By integrating data mining, business intelligence, environmental analytics, and system development, this volume strengthens JSIKTI’s mission to support applied computing innovations across business, industry, and public sectors in Indonesia.