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Why XML Still Matters: A Developer's Encounter With Legacy Enterprise Systems

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A developer working primarily with JSON was recently asked by a client to deliver webhook payloads in XML format, prompting a deeper look at legacy infrastructure. The request highlighted how enterprise sectors such as banking, government APIs, payment gateways, and logistics software continue to rely heavily on XML. Manually converting complex, deeply nested JSON structures to valid XML proved error-prone and time-consuming, with issues like missing closing tags or unescaped characters breaking parsers. To address recurring conversion needs during API integration, the developer's team built a dedicated JSON-to-XML tool into their platform, Fixzi.ai. The experience served as a reminder that older, battle-tested data standards still underpin much of the world's critical infrastructure.

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Why XML Still Matters: A Developer's Encounter With Legacy Enterprise Systems · ShortSingh