Yes, you can use Business Application Studio (BAS) for ABAP development. BAS is a web-based development environment provided by SAP for building applications across various SAP technologies, including ABAP.

With BAS, you can develop and maintain ABAP applications using modern tools and techniques. It provides features such as code editing, debugging, testing, and integration with source code repositories. BAS also offers a rich set of extensions and plugins to enhance your development experience.

To work with ABAP in BAS, you'll need to set up the necessary connections to your SAP system, such as the ABAP development server or SAP Cloud Platform ABAP Environment. Once the connection is established, you can create ABAP projects, develop ABAP classes, function modules, reports, and other ABAP artifacts within the BAS environment.

BAS provides an intuitive and collaborative environment for ABAP development, allowing multiple developers to work on the same project simultaneously. It also supports continuous integration and delivery practices, enabling you to automate build and deployment processes.

Overall, BAS offers a modern and efficient way to develop ABAP applications, leveraging the capabilities of web-based tools and integrating with SAP's cloud-based technologies.