On 19 May 2026, South Africa experienced another major internet connectivity crisis — the kind that has become a recurring and largely underappreciated threat to every business running digital advertising in the country. Multiple subsea cable failures disrupted connectivity for millions of users, knocked out Microsoft Azure and Microsoft 365, and served as a sharp reminder of how dependent SA's digital economy is on a handful of physical cables running beneath two oceans. If you run Google Ads, Meta campaigns, or any form of performance marketing, this is not just an IT story. It is a marketing story.

What Actually Happened

South Africa's international internet traffic relies on a series of undersea fibre optic cables — principally the West Africa Cable System (WACS), MainOne, SAT-3, ACE and Google's Equiano cable running along the west coast, plus SEACOM on the east. When one or more of these are damaged, the country has limited redundancy to absorb the disruption. This is not a new vulnerability — South Africa has experienced major subsea cable events in 2023, March 2024, May 2024, and again now.

The 2024 March event — widely considered the most severe — saw four cables simultaneously disrupted off the coast of Abidjan, Ivory Coast, likely from seismic activity at depth. WACS alone carries approximately 39% of South Africa's international internet traffic. When it goes down alongside multiple other cables, the result is not just slow connections — it's cloud services going dark, Microsoft 365 becoming inaccessible, and businesses unable to reach their own servers, CRMs, or advertising platforms.

4+
Subsea cables
simultaneously affected
39%
SA international traffic
carried by WACS alone
Wks–Mo
Typical repair timeline
depending on location

The repair timeline is the part most businesses underestimate. Cable repair requires specialist vessels, precise underwater ROV operations, and favourable sea conditions. Repairs can take weeks to months — meaning any business that treats these events as one-day disruptions is likely to be caught unprepared when the degraded service persists.

What It Means for Your Campaigns

The immediate instinct when digital infrastructure fails is to wait it out. For many business owners, an outage day feels like a natural reason to pause campaigns — after all, if people can't get online reliably, they're not clicking ads. This instinct is understandable but often wrong, and here's why.

Subsea cable failures in South Africa do not create uniform blackouts. They create degraded connectivity — slower speeds, intermittent access, higher latency — particularly for services routed through affected cables. Mobile data, which dominates South African internet usage, may be partially rerouted through alternative paths. A significant portion of your target audience remains online, possibly via mobile networks that have re-routed traffic, or via Starlink and other satellite services whose adoption has accelerated precisely because of this infrastructure fragility.

The Counterintuitive Opportunity

Lower Competition, Same Audience Intent

During outage periods, many advertisers panic and pause campaigns. This reduces auction competition for the audience that remains online — often pushing your cost-per-click down while your competitors go dark. For businesses with campaigns already structured correctly, an outage period can paradoxically deliver better efficiency. The audience with genuine purchase intent doesn't stop searching because of slow internet. They adapt — often using mobile data more than usual — and the competition for their attention thins.

The businesses most severely affected by outage days are those running campaigns that depend on cloud-based landing pages hosted on international infrastructure, or whose tracking and conversion measurement tools (Google Analytics, Meta Pixel, CRM integrations) are routed through affected cables. If your website goes down during an outage, your ads keep spending but your leads stop converting — the worst possible outcome.

Building Outage Resilience Into Your Digital Marketing

South Africa's subsea cable vulnerability is a structural reality, not a temporary problem. The appropriate response is not anxiety — it is preparation. Here is what every SA business running digital marketing should have in place.

Newsletter

Stay Ahead of the Curve

Practical digital marketing insights for marketers and business owners — no fluff, straight to your inbox.

  • Host your website and landing pages locally where possible. South African cloud hosting (AWS Cape Town, Azure South Africa North, Google Cloud Johannesburg) routes domestically rather than internationally. Local hosting significantly reduces the impact of west-coast cable failures on your site availability — your SA customers can still reach you even when international routing is degraded.
  • Set up campaign pause rules based on website availability, not instinct. Google Ads and Meta both support automated rules. A rule that pauses campaigns when your landing page response time exceeds a threshold prevents the worst-case scenario — spending ad budget sending traffic to an unreachable page. Set it up before the next outage, not during.
  • Enable click-to-call as a primary conversion path. During connectivity issues, users on mobile data are more likely to call than to fill in forms that require page loads. Google Ads call-only campaigns and call extensions bypass the landing page entirely — the conversion happens via phone call. This is your most resilient lead generation format during degraded internet conditions.
  • Use Meta Lead Forms instead of website landing pages for social campaigns. Meta's native lead forms capture contact details within the Facebook or Instagram app — no external page load required. During outage conditions, they convert significantly better than traffic campaigns that route to external sites. They also load faster on degraded mobile connections by design.
  • Monitor outage events and build a response protocol. Services like Downdetector, NetBlocks on X, and MyBroadband's forums give real-time signal of when an outage is live and how severe it is. A simple protocol — check outage status before the trading day, make a call on campaign adjustments, document the decision — prevents reactive panic and ensures you're making informed choices rather than emotional ones.

SA's cable vulnerability is structural, not temporary. The businesses that prepare will outperform those that only react.

— Anaye Digital Strategy Team

The Bigger Picture for SA Digital Business

South Africa's digital economy depends on infrastructure that it does not fully control. The subsea cable network is owned and managed by international consortia; repair timelines are set by weather, vessel availability, and cable ownership agreements. This is not a problem that will be solved by 2026. New cables like Google's Equiano and Meta's 2Africa project are adding capacity and redundancy, but the structural vulnerability — too few cables carrying too much traffic — will take years to materially reduce.

For businesses building long-term digital marketing capabilities in South Africa, this means resilience is not optional. It means local hosting where feasible, conversion paths that don't require pristine international connectivity, and a team that can make calm, informed decisions when the next cable event hits. Because it will hit. The question is only when.

The businesses that experience an outage day and come out ahead are those that had call extensions active, lead forms live, and landing pages on local infrastructure. They kept spending while competitors paused. They captured leads while their rivals went dark. And when connectivity restored, they had a lead pipeline that their competitors didn't.

Newsletter

Stay Ahead of the Curve

Practical digital marketing insights for marketers and business owners — no fluff, straight to your inbox.