{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T13:15:07Z","timestamp":1779282907301,"version":"3.51.4"},"reference-count":0,"publisher":"Politechnika Wroclawska Oficyna Wydawnicza","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["EISEJ"],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:p>Context: In the fast-growing API Economy scenario, API Gateways became an essential tool for microservice reliability and scalability, yet lack standardized quality models and measures to assess these tools in an objective fashion.<\/jats:p>\n                  <jats:p>Objective: This study quantitatively and qualitatively assessed the accuracy and relevance of a~set of 59 metrics, gathered from prior analysis of 68 mainstream API Gateway software offerings.<\/jats:p>\n                  <jats:p>Method: An expert judgment evaluation study was conducted with seven domain specialists (N=7) from both academia and industry, who assessed each metric\u2019s accuracy and relevance using 5-point Likert scales. A~multi-statistical method was performed to assess ratings, inter-observer consistency and reliability.<\/jats:p>\n                  <jats:p>Results: Although ratings were generally neutral to positive, statistical analysis revealed low consensus across experts. A~subset of 24 core metrics with strong agreement and high scores was identified, alongside moderate- and low-agreement sets. These items cover key API management concerns, including traffic monitoring, error handling, latency, and resource usage.<\/jats:p>\n                  <jats:p>Conclusions: By combining practical definitions, expert judgment, and a~tiered classification mechanism, this work established a~broad and comprehensive set of metrics that will help to bridge the gap between metric adoption in real-world platforms and their theoretical grounding in software quality models.<\/jats:p>","DOI":"10.37190\/e-inf260106","type":"journal-article","created":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T13:02:02Z","timestamp":1779282122000},"page":"260106","source":"Crossref","is-referenced-by-count":0,"title":["From Draft to Standard: An Expert-Validated Catalog of API Gateway Software Metrics"],"prefix":"10.37190","volume":"20","author":[{"given":"Eder","family":"dos Santos","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandra","family":"Casas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"23140","published-online":{"date-parts":[[2026]]},"container-title":["e-Informatica Software Engineering Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.e-informatyka.pl\/EISEJ\/papers\/2026\/1\/6\/eInformatica2026Art06.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T13:02:03Z","timestamp":1779282123000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.e-informatyka.pl\/EISEJ\/papers\/2026\/1\/6\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026]]},"published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.37190\/e-inf260106","relation":{},"ISSN":["2084-4840"],"issn-type":[{"value":"2084-4840","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026]]}}}