Explore non-invertible symmetry, holography, and branes in this 44-minute conference talk by Ibrahima Bah from Johns Hopkins University. Delivered as part of the Gravity from algebra: modern field theory methods for holography conference at the Kavli Institute for Theoretical Physics, delve into topics such as generalized symmetries, topological operators, and string theory. Examine the connections between Gauss law, symmetry generators, and page charge. Investigate brane dynamics, fusion, and their relation to dual quantum field theories. Gain insights into the latest developments in conformal field theory and its applications to holography and quantum gravity. Suitable for researchers and advanced students in theoretical physics looking to expand their understanding of modern approaches to holographic duality and its implications for string/M-theory.