Aad, G.Aakvaag, E.Abbott, B.Abeling, K.Abicht, N. J.Abidi, S. H.Wang, Z.2025-09-102025-09-1020251434-60441434-6052https://doi.org/10.1140/epjc/s10052-024-13701-wGutierrez Zagazeta, Luis Felipe/0000-0003-0374-1595; Bogavac, Danijela/0000-0003-2138-9062; Clavijo Columbié, José Manuel/0000-0003-3210-1722; Alves, Fabio Lucio/0000-0002-1626-6255; Nowak, Marcin/0000-0002-9251-6842; Ulloa Poblete, Pablo Augusto/0000-0002-0789-7581; Zenz, Seth/0000-0002-9720-1794; Muñoz Pérez, David/0000-0003-3215-6467; Iurii, Naryshkin/0000-0001-6412-4801; Juzek, Monika/0000-0002-7269-9194; Djama, Farès/0000-0003-1881-3360; Cunha Sargedas Sousa, Mário José/0000-0001-7991-593X; Kourlitis, Vangelis/0000-0001-6568-2047; Gessinger, Paul/0000-0002-3056-7417; , Alessano/0000-0002-8224-6105; Konstantinidis, Nikolaos/0000-0002-4140-6360; Cheu, Elliott/0000-0002-2562-9724; Ince Lezki, Merve/0000-0001-6907-0195; , Sascha/0000-0003-2941-2829; Konstantinidis, Nikolaos/0000-0002-4140-6360; Munoz Sanchez, Francisca/0000-0002-6374-458X; Pani, Priscilla/0000-0003-2149-3791; Cueto Gómez, Ana Rosario/0000-0003-1494-7898; Martin Dit Latour, Bertrand/0000-0003-3420-2105; Żak, Zuzanna/0000-0002-9330-8842; Panduro Vazquez, Jose Guillermo/0000-0003-2605-8940; Siek, Sinem/0000-0002-9650-3846; Ruelas Rivera, Victor Hugo/0000-0002-2116-048X; Príncipe Martín, Miguel Ángel/0000-0002-5085-2717; Falda Ulhoa Coelho, Luis Felipe/0000-0002-2298-3605; Duehrssen-Debling, Michael/0000-0002-5833-7058; Aguet, Maxence/0000-0003-1530-0519; Roigues, Marcus Vinícius/0000-0002-7906-8088; Dong, Qichen/0000-0002-0117-7831; Mezquita, Costa/0000-0002-2064-2954; De Vivie, Jean-Baptiste/0000-0001-9163-2211; Yaley, Bruce/0000-0002-2680-0474; Gargan, Jack/0009-0003-7280-8906; Benjamin, Trocme/0000-0001-9500-2487; Pereira Peixoto, Ana Paula/0000-0003-3424-7338; Morvaj, Ljiljana/0000-0003-2061-2904;The ATLAS experiment has developed extensive software and distributed computing systems for Run 3 of the LHC. These systems are described in detail, including software infrastructure and workflows, distributed data and workload management, database infrastructure, and validation. The use of these systems to prepare the data for physics analysis and assess its quality are described, along with the software tools used for data analysis itself. An outlook for the development of these projects towards Run 4 is also provided.eninfo:eu-repo/semantics/openAccessArticle2-s2.0-10501244435110.1140/epjc/s10052-024-13701-w