1）interpersonal and interdepartmental work
例句：
作为销售代表,为对内和对外的工作的联络和开展提供基本的指引.
To provide basic guidelines for interpersonal and interdepartmental courtesy and conduct as a representative of the Sales Department
2）inwardly-focused vs.outwardly-focused work
例句：
对内和对外工作的比例可能不同,这取决于你们正在开发的软件,以及你们产品的市场定位.
But depending on the software you’re building and your product position in the market,the proportion of inwardly-focused vs.outwardly-focused work may vary.
你要根据语境选择不同的译法