{"id":900,"date":"2026-04-09T06:47:38","date_gmt":"2026-04-09T06:47:38","guid":{"rendered":"https:\/\/srini.ee\/?post_type=case&p=900"},"modified":"2026-05-27T08:24:52","modified_gmt":"2026-05-27T08:24:52","slug":"from-legacy-java6-to-a-digital-betslip-platform","status":"publish","type":"case","link":"https:\/\/srini.ee\/en\/case-studies\/from-legacy-java6-to-a-digital-betslip-platform\/","title":{"rendered":"From legacy Java 6 to a digital\u00a0betslip\u00a0platform\u00a0"},"content":{"rendered":"
\r\n

Estonia’s national lottery operator, serving thousands of customers daily through both physical and digital channels under strict regulatory oversight.<\/span><\/span>\u00a0<\/span><\/h4>\n<\/div>\r\n\r\n\n\n
\r\n
\r\n \r\n
\n\n
\n
\r\n
\r\n
\r\n
Partnership<\/dt>\r\n
5+ years, ongoing<\/dd>\r\n <\/dl>\r\n
\r\n
Paper saved each month<\/dt>\r\n
55 kg<\/dd>\r\n <\/dl>\r\n <\/div><\/div>\n<\/div>\n\n<\/div>\r\n <\/div>\r\n \r\n<\/div>\r\n\n\n
\r\n

Challenge<\/strong><\/p>\n

The lottery was running on Java 6 with Oracle and an aging WebLogic stack, plus a boxed third-party engine that supported only one game type. Five development teams shared one test environment, and the printers needed to read paper\u00a0<\/span>betslips<\/span>\u00a0were going end-of-life.<\/span><\/span>\u00a0<\/span><\/p>\n

Solution: <\/strong><\/p>\n

    \n
  • Digital\u00a0betslip.\u00a0<\/span><\/b>Customers\u00a0pick\u00a0numbers online, the system generates a QR code, and the ticket is\u00a0validated\u00a0at any physical point of sale \u2014 replacing paper-scanning hardware that was about to disappear.<\/span>\u00a0<\/span><\/li>\n
  • AI-paired development.\u00a0<\/span><\/span><\/strong>The team uses Windsurf, Gemini,\u00a0<\/span>Claude<\/span>, and ChatGPT across the daily workflow; most code is AI-generated and developer-refined.<\/span><\/span>\u00a0<\/span><\/li>\n
  • Hybrid cloud architecture.<\/strong>\u00a0<\/span><\/span>AWS tunnels bridge cloud\u00a0<\/span>features to<\/span>\u00a0existing\u00a0<\/span>on-premise<\/span>\u00a0systems, letting\u00a0<\/span>modernization<\/span>\u00a0happen without a big-bang migration.<\/span><\/span>\u00a0<\/span><\/li>\n
  • Lightweight Scrum.<\/strong>\u00a0<\/span><\/span>Two-week sprints with weekly client check-ins keep momentum without ceremonial overhead.<\/span><\/span>\u00a0<\/span><\/li>\n<\/ul>\n<\/div>\r\n\r\n\n\n\n
    \n
    \n\t
      \n\t\t\t\t\t\t\t\t
    • \n\t\t\t\t\n\t\t\t\t\tAI<\/span>\n\t\t\t\t<\/span>\n\t\t\t<\/li>\n\t\t\t\t\t\t\t\t
    • \n\t\t\t\t\n\t\t\t\t\tAWS<\/span>\n\t\t\t\t<\/span>\n\t\t\t<\/li>\n\t\t\t\t\t\t\t\t
    • \n\t\t\t\t\n\t\t\t\t\tBackend<\/span>\n\t\t\t\t<\/span>\n\t\t\t<\/li>\n\t\t\t\t\t\t\t\t
    • \n\t\t\t\t\n\t\t\t\t\tJava<\/span>\n\t\t\t\t<\/span>\n\t\t\t<\/li>\n\t\t\t\t\t\t\t\t
    • \n\t\t\t\t\n\t\t\t\t\tOracle<\/span>\n\t\t\t\t<\/span>\n\t\t\t<\/li>\n\t\t\t\t\t\t\t\t
    • \n\t\t\t\t\n\t\t\t\t\tPublic<\/span>\n\t\t\t\t<\/span>\n\t\t\t<\/li>\n\t\t\t<\/ul>\n\t<\/div>\n<\/div>\n\n\n
      \r\n

      Result<\/strong><\/p>\n

        \n
      • Digital\u00a0betslip\u00a0live \u2014 paper-ticket dependency on path to retirement.<\/span>\u00a0<\/span><\/li>\n
      • A 3-developer team often\u00a0<\/span>waiting<\/span>\u00a0<\/span>on<\/span>\u00a0client feedback, not the other way around.<\/span><\/span>\u00a0<\/span><\/li>\n
      • Architecture\u00a0<\/span>ready<\/span>\u00a0for a third lottery engine to replace the existing two.<\/span><\/span>\u00a0<\/span><\/li>\n
      • Compliance risks reduced through better monitoring and data integrity.<\/span><\/span>\u00a0<\/span><\/li>\n<\/ul>\n

         <\/p>\n

        Key takeaway<\/strong><\/p>\n

        A regulated, mission-critical legacy system can be\u00a0<\/span>modernized<\/span>\u00a0by a small AI-paired team faster than most\u00a0<\/span>organizations<\/span>\u00a0can review the output \u2014 without compromising stability or compliance.<\/span><\/span>\u00a0<\/span><\/p>\n<\/div>\r\n\r\n\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":1208,"template":"","case_category":[9,43,33,10,42,7],"industry":[27,12],"class_list":["post-900","case","type-case","status-publish","has-post-thumbnail","hentry","case_category-ai","case_category-aws","case_category-backend","case_category-java","case_category-oracle","case_category-public","industry-gaming","industry-public"],"acf":[],"yoast_head":"\nFrom legacy Java 6 to a digital\u00a0betslip\u00a0platform\u00a0 \u2013 SRINI Case Study<\/title>\n<meta name=\"description\" content=\"Eesti Loto Production System Maintenance and Development \u2013 A SRINI case study in AI-powered software 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