The Astrophysics and Cosmo Observations  spoke is organized in Working Packages (WP) to address the following main topics:

• WP1, HPC Codes Enabling and Optimization: it selects a number of codes that require large computational resources to face the next generation of scientific challenges and performs their redesign, reimplementation and optimisation in order to effectively exploit state-of-the-art HPC solutions, including accelerators and alternative architecture (e.g. GPUs and ARM architectures respectively).
• WP2, Design of innovative Algorithms, Methodologies, Codes toward Exascale and beyond: it identifies innovative algorithms and methodologies upgrading their capability to exploit, and scale on, the exascale and post exascale architectures, merging the resulting improved features in codes, workflow and pipelines.
• WP3, Big Data Analysis, Machine Learning and Visualization: it addresses the application of advanced Artificial Intelligence and Visualization solutions to large astrophysical data volumes, facilitating the convergence (heterogeneous computing) of HPC, HTC, HPDA and Cloud tools and exploiting Exascale platforms.
• WP4, Big Data Management, Storage and Archiving: it starts from already implemented best practices and frameworks to manage data and software with FAIR and Open Science principles, to develop innovative frameworks able to satisfy the Big Data Challenge.
• WP5, HPC services and access: the WP oversees the management, maintaining and deploying an integrated environment providing the tools for the efficient development of the work described in WPs 1-4. Management and distribution of large datasets in the Data Lake. High-rate analysis.
• The five WPs work in synergy among themselves and with the private stakeholders affiliated to the Spoke.
• An additional WP0 provides managerial resources for the project.