{'fraction_non_alphanumeric': 0.01734906315058987, 'fraction_numerical': 0.0, 'mean_word_length': 5.2155172413793105, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Towards trust management for cloud-based ecosystems

Inter-enterprise collaborations allow service providers to focus on their key 
competences while providing a composed service to end customers. The actors 
involved must determine whether the gains from participating outweigh the risks 
of depending on other autonomous collaboration participants, in order to make 
trust decisions on their willingness to collaborate. We define trust as the 
extent to which an actor is willing to participate in a given action with a 
given partner, considering the risks and incentives involved. 
 
In this paper, we present two high-level alternatives for trust management 
architectures for cloud-based service ecosystems: closed collaboration 
environments and open service ecosystems. Closed environments, such as 
traditional virtual organization breeding environments, are often built around a 
hub actor, centrally managed and apply pre-formed trust relationships in 
determining who is allowed into the breeding environment. Open service 
ecosystems, in contrast, allow service providers to enter the ecosystem by 
publishing a valid service offer, and trust relationships are formed and evolve 
within the ecosystem. 
We discuss the implications these choices have on further architecture 
refinement, and compare the strengths and weaknesses of the approaches, 
including their infrastructure needs, viability and ability to scale up in size.