Glenoid implant for a shoulder prosthesis, comprising: - a baseplate, - a first articular component (30; 40; 60; 70) which has a convex articular surface (31; 41; 61; 71), and - a platform (20; 120) which is provided both to be secured to the first articular component by a first attachment of the glenoid implant and to be secured to the baseplate by a second attachment of the glenoid implant, the first attachment being independent from the second attachment and defining an assembly axis (Z-Z) which extends in a proximodistal direction and along which the platform and the first articular component are assembled together, characterized in that the first attachment comprises: - a translational connection that is intraoperatively operable to prevent translation between the platform and the first articular component (30; 40; 60; 70) along the assembly axis (Z-Z), and - a rotational connection that is intraoperatively operable to prevent rotation between the platform and the first articular component around the assembly axis, the translational connection and the rotational connection being distinct from each other, in that the translational connection includes at least one translational stop feature (23.2, 28; 128) of the platform (20; 120) and at least one translational stop feature (34, 35; 44, 45, 48) of the first articular component (30; 40; 60; 70), which are designed to be intraoperatively engaged together and, when engaged together, to mechanically interfere with each other so as to prevent translation between the platform and the first articular component along the assembly axis (Z-Z), in that the at least one translational stop feature of the platform (20; 120) comprises at least one flange (23.2) that is elastically deformable with respect to the rest of the platform, in that the at least one translational stop feature of the first articular component (30; 40; 60; 70) comprises at least one recess (35; 45), into which the at least one flange is snapped after being elastically deformed by pinching the at least one flange toward the assembly axis (Z-Z) then by elastic return upon intraoperative assembly between the platform and the first articular component, and with which the at least one flange axially interferes to prevent translation along the assembly axis (Z-Z) in an axial direction in which the platform and the first articular component move away from each other, and in that the first articular component has at least one through-hole, which opens on the at least one flange when the platform and the first articular component are assembled together and into which a tool is insertable to act on the at least one flange to deform the at least one flange by pinching the at least one flange toward the assembly axis (Z-Z). - a baseplate, - a first articular component (30; 40; 60; 70) which has a convex articular surface (31; 41; 61; 71), and - a platform (20; 120) which is provided both to be secured to the first articular component by a first attachment of the glenoid implant and to be secured to the baseplate by a second attachment of the glenoid implant, the first attachment being independent from the second attachment and defining an assembly axis (Z-Z) which extends in a proximodistal direction and along which the platform and the first articular component are assembled together, - a translational connection that is intraoperatively operable to prevent translation between the platform and the first articular component (30; 40; 60; 70) along the assembly axis (Z-Z), and - a rotational connection that is intraoperatively operable to prevent rotation between the platform and the first articular component around the assembly axis,