{"id":247,"date":"2022-01-25T10:25:00","date_gmt":"2022-01-25T10:25:00","guid":{"rendered":"https:\/\/www.cybermedian.com\/pt\/?p=247"},"modified":"2022-03-24T15:42:20","modified_gmt":"2022-03-24T07:42:20","slug":"why-scrum-defined-process-vs-empirical-process","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/pt\/why-scrum-defined-process-vs-empirical-process\/","title":{"rendered":"Por que Scrum: Processo Definido vs Processo Emp\u00edrico"},"content":{"rendered":"<ul class=\"postList\">\n<li id=\"6fdf\" class=\"graf graf--li graf-after--li graf--trailing\">\n<p id=\"226a\" class=\"graf graf--p graf-after--h3\"><span>Existem projetos que s\u00e3o bastante diretos e relativamente previs\u00edveis, onde podem ser aplicadas ferramentas racionais de planejamento e tomada de decis\u00e3o.\u00a0Outros projetos mais complexos ou imprevis\u00edveis exigem uma abordagem diferente, mais baseada na auto-organiza\u00e7\u00e3o e inova\u00e7\u00e3o.<\/span><\/p>\n<p id=\"739b\" class=\"graf graf--p graf-after--p\"><span>A maioria dos projetos de desenvolvimento de software s\u00e3o considerados complexos e imprevis\u00edveis por natureza devido \u00e0 converg\u00eancia de tr\u00eas fatores: pessoas, requisitos e tecnologia.\u00a0As v\u00e1rias abordagens usadas para entregar e gerenciar projetos podem ser mais facilmente compreendidas no contexto de modelos de controle de processos e complexidade do projeto.<\/span><\/p>\n<figure id=\"97ea\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0SBG6YX-dIqVKfVcB.png\" data-image-id=\"0*SBG6YX-dIqVKfVcB.png\" data-width=\"1061\" data-height=\"381\" data-is-featured=\"true\" \/><figcaption class=\"imageCaption\"><span>Tipos de Controle de Processo<\/span><\/figcaption><\/figure>\n<p id=\"e4c5\" class=\"graf graf--p graf-after--figure\"><strong class=\"markup--strong markup--p-strong\"><span>Processo Definido \u2014 Uma Abordagem Tradicional Orientada a Planos<\/span><\/strong><\/p>\n<p id=\"ef5e\" class=\"graf graf--p graf-after--p\"><span>Tradicionalmente, uma vez que um projeto \u00e9 iniciado, um pacote de requisitos \u00e9 criado e ent\u00e3o \u201cassinado\u201d.\u00a0O gerente de projeto assume que essa aprova\u00e7\u00e3o resulta em um conjunto fixo de requisitos e que agora o planejamento pode come\u00e7ar.\u00a0O gerente de projeto estima quanto tempo levar\u00e1 para concluir os requisitos e cria o plano do projeto.\u00a0O plano prev\u00ea que o projeto ser\u00e1 conclu\u00eddo em uma determinada data e essa data \u00e9 comunicada de volta ao cliente.<\/span><\/p>\n<p id=\"1431\" class=\"graf graf--p graf-after--p\"><span>A falha fundamental nessa abordagem \u00e9 que o plano, que orienta tudo, \u00e9 baseado na suposi\u00e7\u00e3o de que os requisitos s\u00e3o fixos e n\u00e3o ser\u00e3o alterados.\u00a0A experi\u00eancia nos mostrou que esse nunca \u00e9 o caso;\u00a0os requisitos nunca s\u00e3o fixos \u2014 eles sempre mudam.\u00a0Quando os requisitos mudam, o plano \u00e9 afetado;\u00a0e, como resultado, a data de conclus\u00e3o tamb\u00e9m precisa mudar.\u00a0Infelizmente, em muitos casos, isso \u00e9 imposs\u00edvel, e a equipe precisa entregar na data em que se comprometeu.\u00a0\u00c9 quando ocorre uma grande crise e o projeto come\u00e7a a sair do controle.<\/span><\/p>\n<p id=\"9d3a\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\"><span>Processo Emp\u00edrico \u2014 Abordagem \u00c1gil Orientada ao Valor<\/span><\/strong><\/p>\n<p id=\"e9c9\" class=\"graf graf--p graf-after--p\"><span>A abordagem \u00e1gil orientada por valor \u00e9 baseada no\u00a0\u00a0<\/span><strong class=\"markup--strong markup--p-strong\"><span>empirismo\u00a0<\/span><\/strong><span>\u00a0que muda toda a mentalidade.\u00a0Ele assume desde o in\u00edcio que quaisquer requisitos existentes no in\u00edcio n\u00e3o s\u00e3o fixos e que eles ser\u00e3o alterados.<\/span><\/p>\n<p id=\"7066\" class=\"graf graf--p graf-after--p\"><span>A mentalidade \u00e1gil tamb\u00e9m pressup\u00f5e que voc\u00ea deve entregar em uma determinada data.\u00a0Essa abordagem fixa o tempo e os recursos e deixa os requisitos indeterminados.\u00a0Para n\u00f3s, essa abordagem se assemelha mais \u00e0 realidade da cria\u00e7\u00e3o de software.\u00a0Agora, toda a no\u00e7\u00e3o de valor orientado faz todo o sentido.\u00a0Quando voc\u00ea tem uma quantidade fixa de tempo em que n\u00e3o tem certeza se pode entregar todos os requisitos (porque eles v\u00e3o mudar e, portanto, o tempo necess\u00e1rio para termin\u00e1-los mudar\u00e1), a rea\u00e7\u00e3o natural \u00e9 priorizar os requisitos e terminar primeiro aqueles que agregam mais valor ao cliente.<\/span><\/p>\n<p id=\"5ef5\" class=\"graf graf--p graf-after--p\"><span>Voc\u00ea pode estar pensando: \u201cE os requisitos que n\u00e3o foram conclu\u00eddos at\u00e9 a data de entrega?\u201d\u00a0Essa \u00e9 a raz\u00e3o pela qual voc\u00ea usa a abordagem orientada por valor.\u00a0Voc\u00ea reconhece o fato de que nem todos os requisitos ser\u00e3o conclu\u00eddos at\u00e9 a data de entrega.\u00a0A quest\u00e3o importante a ser feita \u00e9 se voc\u00ea forneceu recursos suficientes para dar suporte a um sistema que agrega valor ao cliente.<\/span><\/p>\n<p id=\"b68e\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\"><span>Taxa de falha de projetos de software<\/span><\/strong><\/p>\n<p id=\"6685\" class=\"graf graf--p graf-after--p\"><a class=\"markup--anchor markup--p-anchor\" href=\"http:\/\/blog.standishgroup.com\/post\/50\" target=\"_blank\" rel=\"noopener\" data-href=\"http:\/\/blog.standishgroup.com\/post\/50\"><span>O Relat\u00f3rio CHAOS<\/span><\/a><span>\u00a02015\u00a0\u00a0\u00a0foi lan\u00e7ado recentemente pelo\u00a0\u00a0<\/span><a class=\"markup--anchor markup--p-anchor\" href=\"http:\/\/standishgroup.com\/\" target=\"_blank\" rel=\"noopener\" data-href=\"http:\/\/standishgroup.com\/\"><span>Standish Group<\/span><\/a><span>\u00a0.\u00a0Os Relat\u00f3rios CHAOS s\u00e3o publicados todos os anos desde 1994 e s\u00e3o um retrato do estado da ind\u00fastria de desenvolvimento de software.\u00a0Este ano, o relat\u00f3rio estudou 50.000 projetos em todo o mundo, variando de pequenas melhorias a implementa\u00e7\u00f5es maci\u00e7as de reengenharia de sistemas.\u00a0Este ano, o relat\u00f3rio inclui uma defini\u00e7\u00e3o aprimorada de sucesso, analisando alguns fatores adicionais que foram abordados em pesquisas anteriores.<\/span><\/p>\n<p id=\"c0cc\" class=\"graf graf--p graf-after--p\"><span>Os resultados indicam que ainda h\u00e1 trabalho a ser feito para alcan\u00e7ar resultados bem-sucedidos de projetos de desenvolvimento de software.\u00a0Esta tabela resume os resultados dos projetos nos \u00faltimos cinco anos usando a nova defini\u00e7\u00e3o de fatores de sucesso (no prazo, dentro do or\u00e7amento com resultado satisfat\u00f3rio).<\/span><\/p>\n<figure id=\"4297\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0UbWALIqlmpgq9A9S.jpg\" data-image-id=\"0*UbWALIqlmpgq9A9S.jpg\" data-width=\"600\" data-height=\"268\" \/><figcaption class=\"imageCaption\"><span>Taxa de falha do projeto de software<\/span><\/figcaption><\/figure>\n<p id=\"5ca3\" class=\"graf graf--p graf-after--figure\"><span>Com a ado\u00e7\u00e3o de m\u00e9todos de desenvolvimento \u00e1gil nos \u00faltimos anos, foi poss\u00edvel comparar os resultados do projeto entre projetos em cascata \u00e1geis e tradicionais.\u00a0Em todos os tamanhos de projeto, as abordagens \u00e1geis resultaram em projetos mais bem-sucedidos e menos falhas definitivas, conforme mostrado nesta tabela<\/span><\/p>\n<figure id=\"4410\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/1N1lor-VNUv6DwwjgLK_BFA.jpg\" data-image-id=\"1*N1lor-VNUv6DwwjgLK_BFA.jpeg\" data-width=\"600\" data-height=\"439\" \/><\/figure>\n<p id=\"efd6\" class=\"graf graf--p graf-after--figure\"><strong class=\"markup--strong markup--p-strong\"><span>Quais s\u00e3o os problemas da abordagem tradicional?<\/span><\/strong><\/p>\n<p id=\"dbab\" class=\"graf graf--p graf-after--p\"><span>A abordagem tradicional baseada em planos n\u00e3o \u00e9 falha em si mesma;\u00a0simplesmente n\u00e3o \u00e9 adequado para a ind\u00fastria de software de hoje.\u00a0A abordagem baseada em planos foi originalmente baseada em conceitos tradicionais de gerenciamento de projetos, originados da ind\u00fastria da constru\u00e7\u00e3o.\u00a0Na ind\u00fastria da constru\u00e7\u00e3o, a abordagem baseada em planos \u00e9 adequada: os projetos, que s\u00e3o os requisitos, s\u00e3o fixos e provavelmente n\u00e3o ser\u00e3o alterados enquanto o edif\u00edcio estiver sendo constru\u00eddo.\u00a0Voc\u00ea pode estimar quanto tempo levar\u00e1 para construir os pilares de a\u00e7o, despejar o concreto e assim por diante.<\/span><\/p>\n<p id=\"81d8\" class=\"graf graf--p graf-after--p\"><span>A raz\u00e3o pela qual a abordagem tradicional baseada em planos \u00e9 adequada para a ind\u00fastria da constru\u00e7\u00e3o, mas n\u00e3o para a ind\u00fastria de software, est\u00e1 relacionada \u00e0 diferen\u00e7a na maneira como controlamos sistemas emp\u00edricos (como desenvolvimento de software) e na maneira como controlamos sistemas definidos (como constru\u00e7\u00e3o ou manufatura). ).\u00a0A Tabela abaixo mostra as diferen\u00e7as entre as caracter\u00edsticas de um processo definido e as de um processo emp\u00edrico.<\/span><\/p>\n<figure id=\"c7b3\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/14M34bcR48aEGPgHTHHGNMg.png\" data-image-id=\"1*4M34bcR48aEGPgHTHHGNMg.png\" data-width=\"718\" data-height=\"288\" \/><figcaption class=\"imageCaption\"><span>Processo Definido vs Processo Emp\u00edrico<\/span><\/figcaption><\/figure>\n<p id=\"9b06\" class=\"graf graf--p graf-after--figure\"><span>Depois de ler a tabela, \u00e9 f\u00e1cil ver que o desenvolvimento de software \u00e9 definitivamente um processo emp\u00edrico, n\u00e3o um processo definido.\u00a0O problema \u00e9 que abordamos o desenvolvimento de software h\u00e1 anos como um processo definido \u2014 e essa abordagem n\u00e3o funciona.<\/span><\/p>\n<h3 id=\"53ef\" class=\"graf graf--h3 graf-after--p\"><span id=\"References\"><span>Refer\u00eancias<\/span><\/span><\/h3>\n<ol class=\"postList\">\n<li id=\"e810\" class=\"graf graf--li graf-after--h3\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.infoq.com\/articles\/standish-chaos-2015\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.infoq.com\/articles\/standish-chaos-2015\"><span>Relat\u00f3rio de Caos do Standish Group 2015<\/span><\/a><\/li>\n<li id=\"3adc\" class=\"graf graf--li graf-after--li\"><span>Tornando-se \u00e1gil em uma palavra imperfeita \u2014 por Greg Smith &amp; Ahmed Sidky<\/span><\/li>\n<\/ol>\n<h3 id=\"0f64\" class=\"graf graf--h3 graf-after--li\"><span id=\"Other_Scrum_Readings\"><span>Outras leituras do Scrum<\/span><\/span><\/h3>\n<ul class=\"postList\">\n<li id=\"accf\" class=\"graf graf--li graf-after--h3\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/scrum-in-3-minutes\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/scrum-in-3-minutes\/\"><span>Scrum em 3 minutos<\/span><\/a><\/li>\n<li id=\"cbbe\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/the-5-scrum-values\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/the-5-scrum-values\/\"><span>Quais s\u00e3o os 5 Valores do Scrum?<\/span><\/a><\/li>\n<li id=\"209c\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/what-is-the-evolution-of-scrum\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/what-is-the-evolution-of-scrum\/\"><span>Qual \u00e9 a evolu\u00e7\u00e3o do Scrum?<\/span><\/a><\/li>\n<li id=\"5e06\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/classical-vs-agile-project-management\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/classical-vs-agile-project-management\/\"><span>Gerenciamento de Projetos Cl\u00e1ssico x Gerenciamento de Projetos \u00c1gil<\/span><\/a><\/li>\n<li id=\"bbef\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/why-scrum-difficult-to-master\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/why-scrum-difficult-to-master\/\"><span>Por que o Scrum \u00e9 dif\u00edcil de dominar?<\/span><\/a><\/li>\n<li id=\"b26f\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/what-is-scrum-velocity\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/what-is-scrum-velocity\/\"><span>O que \u00e9 velocidade no Scrum?<\/span><\/a><\/li>\n<li id=\"6fdf\" class=\"graf graf--li graf-after--li graf--trailing\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/scrum\/what-is-agile-and-scrum\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/scrum\/what-is-agile-and-scrum\/\"><span>O que \u00e9 \u00c1gil?\u00a0O que \u00e9 Scrum?<\/span><\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>A maioria dos projectos de desenvolvimento de software s\u00e3o considerados complexos e imprevis\u00edveis por natureza devido \u00e0 converg\u00eancia de tr\u00eas factores: pessoas, requisitos e tecnologia. As v\u00e1rias abordagens utilizadas para a entrega e gest\u00e3o de projectos poderiam ser mais facilmente compreendidas no contexto dos modelos de controlo de processos e da complexidade dos projectos.<\/p>\n","protected":false},"author":1,"featured_media":3075,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[8],"tags":[52,63,62,53],"class_list":["post-247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scrum","tag-cn-done","tag-es-done","tag-ja-done","tag-tw-done"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Por que Scrum: Processo Definido vs Processo Emp\u00edrico - Cibermediano<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cybermedian.com\/pt\/why-scrum-defined-process-vs-empirical-process\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Por que Scrum: Processo Definido vs Processo Emp\u00edrico - Cibermediano\" \/>\n<meta property=\"og:description\" content=\"A maioria dos projectos de desenvolvimento de software s\u00e3o considerados complexos e imprevis\u00edveis por natureza devido \u00e0 converg\u00eancia de tr\u00eas factores: pessoas, requisitos e tecnologia. 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