Wire-arc additive manufacturing (WAAM) is a technology capable of making large and complex components using aluminum alloys and has a high level of deposition and material utilization. Aluminum alloys produced by the WAAM process contain many metallurgical defects, resulting in decreased mechanical properties. The practical process of making complex components uses Hybrid Wire Arc Additive Manufacturing (HWAAM) with two alternating processes. A literature review was carried out by summarizing hybrid WAAM GMAW and milling on Aluminum alloys. WAAM process parameters affect the performance of WAAM workpieces; some defects arise due to disproportionate parameters. The hybrid WAAM GMAW process can be combined with several relevant manufacturing processes. The sustainability of the hybrid WAAM milling process, directly and indirectly, affects the quality of WAAM results. The hybrid WAAM-GMAW and milling process has significant prospects and sustainability as a combination of alternating processes to make a product with complex, precise, and accurate geometry more effectively and efficiently by collaborating with two or more relevant machines. ©Published under licence by IOP Publishing Ltd.