哈哈，呢個絕對係一個好問題，如果要細分agency嘅種類，根據Marketing magazine‘s Agency of the Year Awards (agency豬肉獎，所以佢將啲嘢分得那麼細)，其實可以有19幾種，不過大至上可以分為以下幾類：

• Advertising / Media / Digital Agency

• Event / Production Agency

• PR Agency

• Marketing Research Agency

講到PR同event agency嘅分別：PR除咗一啲routine工作，例如：剪報、寫press release、聯絡傳媒等，亦都會自己搞event，但係個規模相對冇咁大，例如係一啲press conference (記者會)、media tour (傳媒參觀)等；而event agency嘅活動規模相對大少少，exhibition、mall decoration、pop-up store等都係，例如某商場可能有啲seasonal卡通人物影相打卡位咁，牽涉到嘅「硬件」會比較多。

而兩者咁容易被混淆，係因為佢哋好多時會同場出現，最明顯嘅例子就係公司annual dinner：PR喺負責guest management同時，又會跟進埋event rundown，同埋同event / production agency夾場地setting，同一齊應付突發事件等，可以話兩者係最佳拍檔。不過隨住一啲PR同event agency嘅規模愈嚟愈大，有啲公司可能有足夠嘅manpower踩過界，所以有時兩者嘅界線相當模糊。

至於想知道有咩出名嘅公司，就咁google "Best PR agency in HK"其實都有啲難搵，其實好似最開頭咁講，可以嘗試從一啲「獎項」出發去搵就會容易得多，最具common嘅除咗Agency of the Year Awards (AOTY)之外，仲有Markies Awards (如果advertising agency仲有金帆獎)，都好易搵到一堆獲獎公司，同埋了解到佢哋嘅忠實客戶係邊個。最後仲有一個建議，其實所謂嘅「名氣」或者「出唔出名」，好多時都係做出嚟，江湖傳聞有啲獎項，只要公司俾錢「買枱」參加頒獎典禮食飯，就可以獲獎，所以代表唔到啲乜。因此建議如果有interview嘅話，可以嘗試了解職位嚟緊會跟啲咩客戶、咩job，呢一啲將會做嘅project，先最具代表性俾你去判斷一間agency嘅實力。

Public relations (PR) and event management work hand in hand but they are not the same thing.

Public relations is a strategic communications process that helps build and maintain mutually beneficial relationships between organizations and its publics. Event management (which requires detailed; logistics and appealing aesthetics) is one component, enhancing the public relations efforts of an organization. 

An event in it self is a project which requires project management skills. It can range from a virtual webinar, conference, seminar to a launch party.

PR 專注對人，event planning對活動細節