ðə lˈeɪɚɹ ˌɪntɚsˈɛpts ˈɔːl dˈɪsk ˌɑːpɚɹˈeɪʃənz ʌv vˈɜːtʃuːəlˌaɪzd ˌæplɪkˈeɪʃənz ænd tɹænspˈæɹəntli ɹˌiːdᵻɹˈɛkts ðˌɛm tʊ ɐ vˈɜːtʃuːəlˌaɪzd loʊkˈeɪʃən, ˈɔfən ɐ sˈɪŋɡəl fˈaɪl.
The layer intercepts all disk operations of virtualized applications and transparently redirects them to a virtualized location, often a single file.