FERNÁNDEZ MONTES , Pablo

As Information Systems are evolving into an ecosystem of services, organizations face the persistent challenge of IT governance. In such a context, Cloud Computing shift has supported a growing service chain that has transformed the business model from industry. In this position paper we outline the dimensions of this service chain reality and...

Traditionally, Service Level Agreements have been decomposed in two sets of properties: functionals (what) and non-functionals (how). However, in our opinion, there has been a third key element that has had a minor attention from academy: temporal awareness (when). We believe temporality is a main concern that should be addressed in realistic...

Nowadays, Software Product Line (SPL) researchers and practi tioners have a diversity of Automated Analysis of Feature Models (AAFM) tools at their disposal. However, only a few applications are compatible between them. This, increases time to market of new applications and hinders application usage by researchers and prac titioners. In this...

The widespread use of Service Oriented Architectures (SOA) is beginning to create problems derived from the governance of said structures. To date there is not a single effective solution to solve all existing challenges to govern this type of infrastructure. This paper describes the problems encountered when designing a SOA governance solution...

Since the emergence of XaaS and Cloud Computing paradigms, the number and complexity of available services have been increasing enormously. These services usually o er a plethora of con guration options, which can even include additional services provided as a bundled o er. In this scenario, usual tasks, such as description, discovery and...

The OpenAPI Specification (OAS) is the de facto standard to describe RESTful APIs from a functional perspective. OAS has been a success due to its simple model and the wide ecosystem of tools supporting the SLA-Driven API development lifecycle. Unfortunately, the current OAS scope ignores crucial information for an API such as its Service Level...

As software architecture design is evolving to a microservice paradigm, RESTful APIs are being established as the preferred choice to build applications. In such a scenario, there is a shift towards a growing market of APIs where providers offer different service levels with tailored limitations typically based on the cost. In such a context,...

La dificultad para decidir la compra de un IaaS (Infrastructure as a Service) depende de la complejidad de las opciones de compra dadas por su proveedor y de la complejidad del plan del cliente que quiere realizarla. Es habitual que estos tipos de servicios ofrezcan muchas configuraciones de uso diferentes, y para cada una de ellas sea...

Software architecture tendencies are shifting to a microservice paradigm. In this context, RESTful APIs are being established the standard of integration. API designer often identifies two key issues to be competitive in such growing market. On the one hand, the generation of accurate documentation of the behavior and capabilities of the API to...

As distribution models of information systems are moving to XaaS paradigms, microservices architectures are rapidly emerging, having the RESTful principles as the API model of choice. In this context, the term of API Economy is being used to describe the increasing movement of the industries in order to take advantage of exposing their APIs as...

As APIs are becoming popular to build Service-Based Ap- plications (SBA), API Gateways are being increasingly used to facilitate API features management. They o er API management functionalities such as pricing plans support, user authentication, API versioning or response caching. Some parts of the information that an API Gateway needs are...

Sofware distribution models are moving to SaaS paradigms where customers no longer need to buy a perpetual license. In this con text, SaaS providers leverage the Service Level Agreement (SLA) concept to delimit the functionality and guarantees to which they commit to their customers. However, although formal specifications for the definition...

Traditionally, Service Level Agreements have been decomposed in two sets of properties: functionals (what) and non-functionals (how). However, in our opinion, there has been a third key element that has had a minor attention from academy: temporal awareness (when). We believe temporality is a main concern that should be addressed in realistic...

The term of API Economy is becoming increasingly used to describe the change of vision in how APIs can add value to the organizations. Furthermore, a greater automation of RESTful APIs management can suppose a competitive advantage for the company. New proposals are emerging in order to automatize some API governance tasks and increase the ease...

In a distributed services oriented environment, having a myriad of functionally equivalent services, Quality of Service(QoS) emerges as the key differential factor. In this scenario organizations can dynamically select partners for their core business processes expressed as Composite Web Services (CWS). As a consequence, QoS-aware...

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Both Academy and Industry agree in the importance of having an adequate management of the Service Oriented Architecture (SOA) to adapt and scale to meet the evolving needs of the organization. in order to face this problem, SOA Governance is defined as the set of policies and principles that manage the operations related with the SOA and allow...

Availability is a key property in computational services and, therefore, is guaranteed by Service Level Agreements (SLAs) from the majority infrastructure services, such as virtualization (Amazon EC2, Windows Azure, Google Cloud, Joyent, Rackspace, ...) and storage (Ama zon S3, Google Cloud Storage, ...). These SLAs describe availability...

La disponibilidad es una propiedad presente en los Acuerdos de Nivel de Servicios (ANSs) de la mayoría de servicios de infraestructura, tanto de computación (Amazon EC2, Windows Azure, Google Cloud, Joyent, Rackspace…) como de almacenamiento (Amazon S3, Google Cloud Storage etc.). Siendo una propiedad básica bien conocida y bien definida en...

There is a steady shift in e‑commerce from goods to services that must be provisioned according to service agreements. This study focuses on software frameworks to develop automated negotiators in open commerce environments. Analysis of the litera‑ ture on automated negotiation and typical case studies led to a catalog of 16 objective...