The realisation of UK net zero target by 2050 appears to be a mirage in construction industry, owing to continuous carbon emissions through the industry. This study aims to appropriately define and classify digital technologies which are applicable to facilities management (FM) and those that could be employed in achieving net zero target. The adoption of digital facilities management has been proposed as a solution for reducing the carbon emission during the operational stage of buildings. However, there has been inappropriate use of the applicable digital technology’s terminologies classified in the literature. This study adopted a systematic review of literature to extract articles from reliable databases like Web of Science and Scopus. Strategic keywords and Booleans were used to extract a total of 30 articles out of 815 articles published between 2017 and 2024, after being subjected to rigorous inclusion and exclusion criteria. The articles were subjected to a thematic analysis uncovering the major themes and gaps emanating from them. The findings from the analysis revealed that digital technologies in FM can be classified into four main headings, namely: digital devices, digital applications, digital systems, and digital connectivity. Besides, all the identified classes of digital technologies are required in the operational stage of buildings to achieve and sustain net zero. The study also revealed that the continued misappropriation of use of terminologies in digital facilities management could impact the quest to achieve net zero negatively. This study recommends future research into capacities and streamlining of classification of digital technologies in FM to fully understand its essence in carbon emission processes to achieve net zero in UK.