Apple, Google, Microsoft, and Mozilla, all browser makers, along with software consultancies Bocoup, and Igalia, have agreed to work together to increase the interoperability of web design technologies and platforms.

The group, and many developers, believe web applications should look and behave the same across different devices and operating systems. So, the companies have jointly created Interop 2022, a benchmark that aims to help solve interoperability differences and browser inconsistencies in the way that certain web standards get implemented.

The collaborative efforts should help advertisers create content and advertisements that look the same on all browsers.

Interop 2022 aims to improve the experience of web development in 15 key areas identified by developers, Google software engineers Rachel Andrew, Robert Nyman, and Philip Jägenstedt wrote in a blog post on Thursday.

Mozilla, Google, and others in 2019 began a major effort to understand developers’ challenges, in the form of the MDN Developer Needs Assessment surveys, and the Browser Compatibility Report. These reports provided detailed information to address top challenges for developers with the web platform, leading to Compat 2021, which led to Interop 2022.

The 15 key areas the Googlers wrote about include cascade layers, which provide a way to group selectors into layers. Color spaces and CSS color functions build in ways that colors can be dynamically updated, among other things. Areas also include new viewport units, scrolling, and subgrid, among others.

One report points to Apple, for example, which has been slow to implement some web APIs in Safari and WebKit that would help web apps compete against native iOS apps.