Dear colleagues, The RIPE Programme Committee (PC) is seeking proposals for plenary presentations, lightning talks, tutorials and BoFs at RIPE 90. This meeting will take place in Lisbon, Portugal from 12 to 16 May 2025. The deadline to submit a presentation proposal is Monday, 3 March 2025. Proposals submitted after this date will only be considered if there are still slots available. This will be a hybrid meeting, so submissions for both in-person and remote presentations are encouraged. Submissions must have original content and should avoid significant use of generative AI except to assist with spelling, grammar and production of images. Please note that the RIPE Meeting is scheduled from midday Monday until midday Friday. If your presentation is accepted, you could be asked to present on any day, so please ensure that you will be available throughout the event when submitting. You will be notified in advance of when you are scheduled to present. You can read more about the call for proposals and submit your proposal at: https://ripe90.ripe.net/submit-topic/cfp/ More information about the RIPE 90 meeting can be found at: https://ripe90.ripe.net/ Warm regards, The Meeting Team on behalf of the RIPE Programme Committee