White House released a statement on the deal.

I welcome the deal to secure the release of hostages taken by the terrorist group Hamas during its brutal assault against Israel on October 7th.

Jill and I have been keeping all those held hostage and their loved ones close to our hearts these many weeks, and I am extraordinarily gratified that some of these brave souls, who have endured weeks of captivity and an unspeakable ordeal, will be reunited with their families once this deal is fully implemented.

I thank Sheikh Tamim bin Hamad Al-Thani of Qatar and President Abdel-Fattah El-Sisi of Egypt for their critical leadership and partnership in reaching this deal. And I appreciate the commitment that Prime Minister Netanyahu and his government have made in supporting an extended pause to ensure this deal can be fully carried out and to ensure the provision of additional humanitarian assistance to alleviate the suffering of innocent Palestinian families in Gaza. I look forward to speaking with each of these leaders and staying in close contact as we work to ensure this deal is carried through in its entirety. It is important that all aspects of this deal be fully implemented.

As President, I have no higher priority than ensuring the safety of Americans held hostage around the world. That’s why—from the earliest moments of Hamas’s brutal assault—my national security team and I have worked closely with regional partners to do everything possible to secure the release of our fellow citizens. We saw the first results of that effort in late October, when two Americans were reunited with their loved ones. Today’s deal should bring home additional American hostages, and I will not stop until they are all released.

Today’s deal is a testament to the tireless diplomacy and determination of many dedicated individuals across the United States Government to bring Americans home.

https://www.whitehouse.gov/briefing-room/statements-releases/2023/11/21/statement-from-president-joe-biden-on-the-hostage-release-in-gaza/

Qatar has also released a statement on the deal.

The State of Qatar announces the success of its joint mediation efforts undertaken with the Arab Republic of Egypt and the United States of America between Israel and the Islamic Resistance Movement (Hamas), resulting in an agreement for a humanitarian pause. The starting time of the pause will be announced within the next 24 hours and last for four days, subject to extension.

The agreement includes the release of 50 civilian women and children hostages currently held in the Gaza Strip in exchange for the release of a number of Palestinian women and children detained in Israeli prisons, the number of those released will be increased in later stages of implementing the agreement.

The humanitarian pause will also allow the entry of a larger number of humanitarian convoys and relief aid, including fuel designated for humanitarian needs.

The State of Qatar affirms its commitment to ongoing diplomatic efforts to de-escalate tensions, stop the bloodshed, and protect civilians. In this regard, the State of Qatar appreciates the efforts of the Arab Republic of Egypt and the United States of America in reaching this agreement.

https://mofa.gov.qa/en/statements/the-state-of-qatar-announces-that-a-humanitarian-pause-has-been-agreed-in-gaza