| 1900 | APG was founded in Geneva (head office up to today), supported by the advertising agencies Haasenstein and Vogler, Vettiner, David and Juvet |
| 1901-1938 | Establishment of a posting network in the F4 World format, starting from Geneva and spreading over the whole of Switzerland Robert Beaujon, first director |
| 1906-1911 | Opening of branches in Zürich, Lausanne, Luzern, Basel, Bern, Neuchâtel |
| 1916 | Lugano branch |
| 1925 | St. Gallen branch |
| 1930 |
First telephone booths financed by advertising: Zürich, junction of the Usteri / Bahnhofstrasse |
| 1937 | Concept for standard poster frames from Bruno Giacometti |
| 1938 |
Poster concessions in more than 90 cities, with 10 public transport companies, and 48 regional railways and resort cableways |
| 1941-2000 |
Design competition Swiss Poster of the Year, awarded by the Swiss Federal Department of the Interior, EDI |
| 1963 |
Introduction of the Wide format F12 |
| 1973 | First Swiss basic poster research project for the survey of reach and opportunities to see |
| 1982 | Aarau, Chur branch |
| 1985 |
Introduction of the City format F200 |
| 1986 | Sion branch |
| 1986-1987 | Poster study in Switzerland: Second basic research project on reach and opportunities to see First documentation of poster network offers with scientifically measured, representative media data |
| 1987 | Winterthur branch First City format backlit poster network, equipment of stops of the Zürich Public Transport VBZ |
| 1987-1998 | Young Talent Competition APG Poster Promotion Prize, offered among the Swiss Design Schools |
| 1988 | Introduction of the Large format 12 m2 Establishment of a special poster network on the occasion of the 700th anniversary of the Swiss Confederation |
| 1992 | First master concept: Zürich Special study on the advertising recall of billboards |
| 1993 | First installation of a City Map backlit poster network: Luzern Special study on the advertising impact of railway station posters |
| 1995 | First installation if the Telecab200'0 telephone booths with backlit poster panels: Zürich, Bahnhofstrasse First planning tool for the individual calculation of media data for poster campaigns |
| 1997 | www.apg.ch: Internet presence Launch of the long-term study APG Poster Performance Index PPI®: Recall, brand recognition and appeal of poster campaigns |
| 1999 | Launch of a new fundamental poster research project The Angie Becker Case: Poster genre advertising and special study on brand promotion Founding of Affichage Holding |
| 2000 |
Kick-off of the third fundamental poster research round: Swiss Poster Research SPR eBoard, Zürich main station: introduction of the first large-scale Out of Home digital format in Switzerland (60 m2 LED display) |
| 2005 | Affichage Out of Home Media: Umbrella brand strategy and visual integration of the various Affichage Holding companies with the "red triangle", the new joint logo Expansion of the Affichage Group's business activities to Greece, northern Italy, and Romania |
| 2006 | APG|SGA Traffic becomes an independent company within Affichage Holding Establishment of Swiss Poster Research Plus SPR+, an independently funded organization for the completion and institutionalization of the third fundamental poster research program |
| 2007 | Commencement of live applications of the SPR+ Expert planning tool Introduction of the new 7-m2 F24 format that replaces the legacy 12-m2 large format |
| 2009 | Introduction of SPR+ based performance prices for billboards |
| 2010 | Lauch of the digital services PosterDirect® (online planning, creation, booking and printing order) and PosterPlus® (dialog smartphone poster) |
| 2011 | Introduction of SPR+ based performance prices also for posters in railway stations Introduction of the new digital format ePanel: 82-inch full-HD portraitformat screens for animated advertising Strategic realignment and focus on the Swiss home market: search for new ownership structures and selling options in Greece, Hungary, northern Italy, Bulgaria and Bosnia-Herzegovina |
| 2012 | Introduction of the new corporate brand APG|SGA for the main business activities in Switzerland, complemented by four segment brands APG|SGA Airport, APG|SGA Mega Poster, APG|SGA Mountain, and APG|SGA Traffic. July 2012: Affichage Holding SA is know as APG|SGA SA. |
| 2013 | Selling business options in Romania and Montenegro Development of the digital portfolio: more than 100 Full HD screens |
| 2014 | Impacta AG and Ecofer AG fully taken over under the new segment brand APG|SGA Rail Launch of "innovate!" – innovation team and online platform for the development and implementation of new ideas in Out of Home advertising |
| 2015 | Modernization and expansion of logistics processes – billposters now use electronic display lists and smartphones Significant expansion of digital range at promising shopping and station locations New sales outlet opened in Brig |
| 2016 | Full acquisition of Alpenplakat AG with 550 poster sites Launch of new segment brand APG|SGA Promotion for the implementation of stand and distribution campaigns |
| 2017 | APG|SGA extends successfully the long-term collaboration with the city of Belgrad (Serbia) APG|SGA pushes its way into the Mobile Media segment and launches a new segment brand, APG|SGA Interaction Introduction of the SPR+ MobNat study, which is based on a national mobility model that covers the frequency of people for each section of the road in Switzerland Expansion of the number of screens for the national package AllStar ePanel CH with more than 480 locations and a digital network performance of 23.2 million contacts |
| 2018 | APG|SGA participates in a proof of concept of the blockchain startup IOTA and tests applications in the smartcity area With aymo, APG|SGA Interaction launches the most accurate mobile targeting in Switzerland and sets new standards in the targeting accuracy of mobile products Launch of the largest digital city ePanel network in Switzerland with 28 screens in Basel |