Damian, DLinaker, JJohnson, DClear, TonyBlincoe, K2021-11-082021-11-082021-112021-11IEEE Software. Vol. 38 (6), pp. 76 - 87, DOI: 10.1109/MS.2021.31050440740-74591937-4194https://hdl.handle.net/10292/14636In platform software ecosystems, organizations partner and innovate together. Success and innovation depend on managing complex sets of business relationships and stakeholders and using a requirements-selection process. We describe the associated challenges and strategies from the study of two large proprietary platform ecosystems.Copyright © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Ecosystems; Software development management; Organizations; Technological innovation; Industries; Electronic commerce; CostsJournal ArticleOpenAccess10.1109/ms.2021.3105044