The most relevant type of computing service that impacts and assists software developers in conducting their work among the options provided is Workplace.
Workplace computing services often include collaboration tools, version control systems, development environments, and cloud services that help developers manage projects and collaborate effectively.
While mashups and social media can be useful in certain contexts, they do not directly assist developers in their core development tasks as much as workplace services do. "Creatio" appears to be an unrelated term in this context.