ITF President David Haggerty and chief operating officer Kelly Fairweather met with Bach and IOC sports director Kit McConnell at their headquarters in the Swiss city this week.

The proposed revamp of the Davis Cup, which could see matches shortened to best-of-three sets rather than five, was among the topics discussed.

The IOC and ITF also spoke about the Olympic Games, the Youth Olympics, athlete involvement, the Olympic Channel and Olympic Solidarity.

American Haggerty outlined the potential changes to the Davis Cup and Fed Cup tournaments to Bach, who expressed his support for the need for governing bodies to to continue to evolve to stay relevant.

"It is impressive to see how much the ITF under President Haggerty has embraced Olympic Agenda 2020, especially with regard to good governance and the integrity of his sport," Bach said.

"It was also good to see the innovative approach ITF is employing with regard to competition formats."

The move regarding the Davis Cup is part of a "package of comprehensive reforms" for both the Davis Cup and Fed Cup, approved by the Board at a meeting in Indian Wells earlier this month.

Both events - the Davis Cup for men and the Fed Cup for women - are among the most prestigious on the tennis calendar, but making changes is a key goal for Haggerty, who was elected to replace Italy's Francesco Ricci Bitti in September 2015.

The ITF are planning to hold further discussions on the implementation of best-of-three-sets matches across either two or three days are continuing with all stakeholders.

The recommendations will be put to the ITF’s Annual General Meeting in Vietnam, due to take to place between August 1 and 4, with all changes requiring a formal vote of approval.

"We had constructive and productive discussions around Agenda 2020 and ITF 2024 which are aligned in many ways, particularly through their emphasis on integrity, clean athletes and the inclusion of all people regardless of colour, race, religion, gender or age," Haggerty said. 

"We also discussed ways that the IOC and ITF can collaborate to develop sport around the world."

The ITF also met representatives of the IOC Sport Department and Yiannis Exarchos, chief executive of Olympic Broadcasting Services, where "positive discussions" took place concerning the Olympic Channel.

Their visit to Lausanne concluded with a meeting with Association of Summer Olympic International Federations executive director Andrew Ryan.