(Reuters) -Zoom Communications ( ZM ) forecast annual revenue below Wall Street estimates on Monday, in a sign of weak demand for its wide range of conferencing tools as employers gradually move away from hybrid work models.

The company's shares were down 4% in extended trading.

Zoom had seen rapid growth in users and subscribers during the pandemic-induced lockdowns, but concerns are being raised over the sustainability of the current demand for video conferencing.

The company also faces stiff competition from Microsoft's collaboration software Teams.

Zoom expects fiscal 2026 revenue between $4.79 billion and $4.80 billion, compared with the average analyst estimate of $4.81 billion, according to data compiled by LSEG.